prsm_data =
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        "p_value": "1.61e-06",
        "e_value": "1.61e-08",
        "fdr": "0",
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        "matched_peak_number": "9",
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            "ms_header": {
                "spectrum_file_name": "C:/toppic_tutorial/tutorial_2/st_1_ms2.msalign",
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                "ms1_scans": "775",
                "ids": "379",
                "scans": "776",
                "precursor_mono_mass": "8420.6164",
                "precursor_charge": "16",
                "precursor_mz": "527.2958",
                "feature_inte": "4.6235e+08"
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            "n_acetylation": "0",
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                    "ptm_type": "Fixed",
                    "ptm": {
                        "abbreviation": "Carbamidomethylation",
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                    "occurence": {
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                        "right_pos": "23",
                        "anno": "C"
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        }
    }
}
