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                    "id": "spec_1_misc_notes",
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            "accession": "UNIMOD:1340",
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                    "id": "delta_mono_mass",
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            "accession": "UNIMOD:1039",
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                    "id": "delta_composition",
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                    "id": "spec_1_group",
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                    "id": "username_of_poster",
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                    "id": "delta_avge_mass",
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                    "id": "group_of_poster",
                    "description": ""
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                    "id": "spec_1_hidden",
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                    "id": "spec_1_site",
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                    "id": "spec_1_classification",
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                {
                    "id": "record_id",
                    "description": "1039"
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                    "id": "spec_1_position",
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                {
                    "id": "delta_mono_mass",
                    "description": "543.236284"
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                    "id": "date_time_posted",
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                    "id": "spec_1_group",
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                    "id": "username_of_poster",
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                {
                    "id": "delta_avge_mass",
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                    "id": "record_id",
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                    "id": "delta_mono_mass",
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                    "id": "spec_1_position",
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                    "id": "date_time_posted",
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                    "id": "username_of_poster",
                    "description": "mengyi"
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                    "id": "delta_avge_mass",
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                    "id": "group_of_poster",
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                    "id": "spec_1_hidden",
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                    "id": "spec_1_site",
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                    "id": "spec_1_classification",
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                {
                    "id": "record_id",
                    "description": "800"
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                    "id": "spec_1_position",
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                    "id": "delta_composition",
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                    "id": "username_of_poster",
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                    "id": "spec_2_group",
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                    "id": "spec_2_position",
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                    "id": "spec_2_classification",
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                    "id": "delta_mono_mass",
                    "description": "473.219571"
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                    "id": "spec_2_hidden",
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                    "id": "spec_2_site",
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                    "id": "spec_1_position",
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            "accession": "UNIMOD:1841",
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                    "id": "spec_1_position",
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            "accession": "UNIMOD:884",
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                    "id": "username_of_poster",
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                    "id": "spec_1_classification",
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                    "id": "username_of_poster",
                    "description": "mpcusack"
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                    "id": "delta_avge_mass",
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                    "id": "spec_1_classification",
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                    "id": "record_id",
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                    "id": "spec_1_position",
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                    "id": "delta_mono_mass",
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        {
            "accession": "UNIMOD:774",
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                    "id": "spec_3_position",
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                    "id": "record_id",
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                    "id": "spec_1_position",
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                    "id": "date_time_posted",
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                {
                    "id": "approved",
                    "description": "0"
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                    "id": "date_time_modified",
                    "description": "2007-10-03 15:42:46"
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                {
                    "id": "spec_3_group",
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            "accession": "UNIMOD:289",
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                    "id": "delta_composition",
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                    "id": "delta_avge_mass",
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                {
                    "id": "group_of_poster",
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                    "id": "spec_1_site",
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                    "id": "spec_1_classification",
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                {
                    "id": "spec_2_group",
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                    "id": "spec_2_position",
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                    "id": "spec_2_classification",
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                    "id": "spec_3_position",
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                    "id": "delta_mono_mass",
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                    "id": "spec_3_misc_notes",
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                    "id": "spec_2_site",
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                    "id": "spec_1_misc_notes",
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                    "id": "spec_3_classification",
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                    "id": "spec_3_site",
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                {
                    "id": "spec_1_position",
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                    "id": "date_time_posted",
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                    "id": "approved",
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                    "id": "spec_3_group",
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            "accession": "UNIMOD:895",
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                    "id": "delta_composition",
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                    "id": "spec_1_position",
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                    "id": "date_time_posted",
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                    "id": "approved",
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                {
                    "id": "date_time_modified",
                    "description": "2009-02-06 16:50:56"
                }
            ]
        },
        {
            "accession": "UNIMOD:1012",
            "name": "Biotin:Invitrogen-M1602",
            "definition": "Nalpha-(3-maleimidylpropionyl)biocytin.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(33) C(23) N(5) O(7) S"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "camoin"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "523.6024"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "C"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "record_id",
                    "description": "1012"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "523.210069"
                },
                {
                    "id": "date_time_posted",
                    "description": "2010-11-16 10:11:53"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2010-12-03 15:58:11"
                }
            ]
        },
        {
            "accession": "UNIMOD:290",
            "name": "Biotin-HPDP",
            "definition": "Pierce EZ-Link Biotin-HPDP.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(32) C(19) N(4) O(3) S(2)"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "tgreco"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "428.6124"
                },
                {
                    "id": "group_of_poster",
                    "description": "users"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "C"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "record_id",
                    "description": "290"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "428.191582"
                },
                {
                    "id": "date_time_posted",
                    "description": "2005-03-03 22:56:52"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2010-12-03 16:28:07"
                }
            ]
        },
        {
            "accession": "UNIMOD:538",
            "name": "Biotin:Cayman-10141",
            "definition": "Was 15dB-biotin.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(54) C(35) N(4) O(4) S"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "sevgh"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "626.8927"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "C"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Other"
                },
                {
                    "id": "record_id",
                    "description": "538"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "626.386577"
                },
                {
                    "id": "date_time_posted",
                    "description": "2006-10-17 18:13:45"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2010-12-03 16:08:40"
                }
            ]
        },
        {
            "accession": "UNIMOD:539",
            "name": "Biotin:Cayman-10013",
            "definition": "Was PGA1-biotin.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(60) C(36) N(4) O(5) S"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "sevgh"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "660.9504"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "C"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Other"
                },
                {
                    "id": "record_id",
                    "description": "539"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "660.428442"
                },
                {
                    "id": "date_time_posted",
                    "description": "2006-10-17 18:24:06"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2010-12-03 16:07:57"
                }
            ]
        },
        {
            "accession": "UNIMOD:2053",
            "name": "Biotin:Aha-PC",
            "definition": "Intact PC Biotin Alkyne tag.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(38) C(29) N(8) O(10) S"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "pluck"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "690.7246"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "M"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "record_id",
                    "description": "2053"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "690.24316"
                },
                {
                    "id": "date_time_posted",
                    "description": "2021-09-30 07:29:58"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2021-09-30 07:43:45"
                }
            ]
        },
        {
            "accession": "UNIMOD:2052",
            "name": "Biotin:Aha-DADPS",
            "definition": "Intact DADPS Biotin Alkyne tag.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(70) C(42) N(8) O(11) Si S"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "pluck"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "923.2022"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_site",
                    "description": "M"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "record_id",
                    "description": "2052"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "922.465403"
                },
                {
                    "id": "date_time_posted",
                    "description": "2021-07-28 08:57:58"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2021-07-28 09:44:43"
                }
            ]
        },
        {
            "accession": "UNIMOD:1314",
            "name": "biotinAcrolein298",
            "definition": "Biotin hydrazide labeled acrolein addition +298.",
            "additional_data": [
                {
                    "id": "delta_composition",
                    "description": "H(22) C(13) N(4) O(2) S"
                },
                {
                    "id": "spec_1_group",
                    "description": "1"
                },
                {
                    "id": "spec_3_hidden",
                    "description": "1"
                },
                {
                    "id": "username_of_poster",
                    "description": "yiyingzhu"
                },
                {
                    "id": "delta_avge_mass",
                    "description": "298.4044"
                },
                {
                    "id": "spec_4_position",
                    "description": "Protein N-term"
                },
                {
                    "id": "group_of_poster",
                    "description": ""
                },
                {
                    "id": "spec_1_site",
                    "description": "C"
                },
                {
                    "id": "spec_1_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "spec_2_group",
                    "description": "2"
                },
                {
                    "id": "spec_2_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_4_site",
                    "description": "N-term"
                },
                {
                    "id": "spec_2_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "spec_3_position",
                    "description": "Anywhere"
                },
                {
                    "id": "delta_mono_mass",
                    "description": "298.146347"
                },
                {
                    "id": "spec_2_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_1_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_4_hidden",
                    "description": "1"
                },
                {
                    "id": "spec_2_site",
                    "description": "H"
                },
                {
                    "id": "spec_3_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "record_id",
                    "description": "1314"
                },
                {
                    "id": "spec_3_site",
                    "description": "K"
                },
                {
                    "id": "spec_1_position",
                    "description": "Anywhere"
                },
                {
                    "id": "spec_4_group",
                    "description": "4"
                },
                {
                    "id": "spec_4_classification",
                    "description": "Chemical derivative"
                },
                {
                    "id": "date_time_posted",
                    "description": "2011-12-15 19:54:52"
                },
                {
                    "id": "approved",
                    "description": "0"
                },
                {
                    "id": "date_time_modified",
                    "description": "2011-12-16 15:19:54"
                },
                {
                    "id": "spec_3_group",
                    "description": "3"
                }
            ]
        }
    ]
}