prsm_data =
{
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        "sequence_name": "sp|P76402|YEGP_ECOLI",
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        "proteoform_id": "37",
        "prsm_number": "1",
        "prsm": {
            "prsm_id": "20",
            "p_value": "4.46e-08",
            "e_value": "4.46e-08",
            "fdr": "0",
            "matched_fragment_number": "8",
            "matched_peak_number": "8",
            "ms": {
                "ms_header": {
                    "spectrum_file_name": "C:/toppic_tutorial/tutorial_3/ecoli_1_ms2.msalign",
                    "ms1_ids": "527",
                    "ms1_scans": "576",
                    "ids": "48",
                    "scans": "577",
                    "precursor_mono_mass": "12067.9461",
                    "precursor_charge": "7",
                    "precursor_mz": "1724.9996",
                    "feature_inte": "1.5547e+06"
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                "peaks": {
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                            "peak_id": "0",
                            "monoisotopic_mass": "1702.9043",
                            "monoisotopic_mz": "852.4594",
                            "intensity": "1450.07",
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                        {
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                            "monoisotopic_mass": "3513.7441",
                            "monoisotopic_mz": "1757.8793",
                            "intensity": "1543.31",
                            "charge": "2",
                            "matched_ions_num": "1",
                            "matched_ions": {
                                "matched_ion": {
                                    "ion_type": "Y",
                                    "match_shift": "0.0000000000",
                                    "theoretical_mass": "3513.7369",
                                    "ion_position": "75",
                                    "ion_display_position": "34",
                                    "ion_sort_name": "Y00034",
                                    "ion_left_position": "75",
                                    "mass_error": "0.0072",
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                                }
                            }
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                            "peak_id": "2",
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                            "monoisotopic_mz": "848.4122",
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                            "matched_ions": {
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                                    "match_shift": "0.0000000000",
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                                    "ion_display_position": "13",
                                    "ion_sort_name": "Y00013",
                                    "ion_left_position": "96",
                                    "mass_error": "0.0095",
                                    "ppm": "6.96"
                                }
                            }
                        },
                        {
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                            "monoisotopic_mz": "1208.5654",
                            "intensity": "1218.92",
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                            "matched_ions": {
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                                    "ion_display_position": "11",
                                    "ion_sort_name": "B00011",
                                    "ion_left_position": "11",
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                            "monoisotopic_mz": "704.3430",
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                            "charge": "1",
                            "matched_ions_num": "1",
                            "matched_ions": {
                                "matched_ion": {
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                                    "match_shift": "0.0000000000",
                                    "theoretical_mass": "703.3330",
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                                    "ion_display_position": "6",
                                    "ion_sort_name": "B00006",
                                    "ion_left_position": "6",
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                        },
                        {
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                            "monoisotopic_mz": "1593.8917",
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                        },
                        {
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                            "monoisotopic_mass": "590.2509",
                            "monoisotopic_mz": "591.2582",
                            "intensity": "849.79",
                            "charge": "1",
                            "matched_ions_num": "1",
                            "matched_ions": {
                                "matched_ion": {
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                                    "match_shift": "0.0000000000",
                                    "theoretical_mass": "590.2489",
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                                    "ion_display_position": "5",
                                    "ion_sort_name": "B00005",
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                                    "mass_error": "0.0020",
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                                }
                            }
                        },
                        {
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                            "intensity": "701.67",
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                            "matched_ions": {
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                                    "match_shift": "0.0000000000",
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                                    "ion_display_position": "4",
                                    "ion_sort_name": "B00004",
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                        },
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                            "matched_ions": {
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                        },
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                        },
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                        {
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                            "matched_ions": {
                                "matched_ion": {
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                                    "match_shift": "0.0000000000",
                                    "theoretical_mass": "676.3392",
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                                    "ion_display_position": "6",
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                                    "ion_left_position": "103",
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                        },
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                        {
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                        {
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            },
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                "unexpected_shift_number": "1",
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