prsm_data =
{
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        "sequence_id": "0",
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        "compatible_proteoform": [
            {
                "sequence_id": "0",
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                "proteoform_id": "0",
                "prsm_number": "4",
                "prsm": [
                    {
                        "prsm_id": "30",
                        "p_value": "5.11e-09",
                        "e_value": "5.11e-11",
                        "fdr": "0",
                        "matched_fragment_number": "24",
                        "matched_peak_number": "35",
                        "ms": {
                            "ms_header": {
                                "spectrum_file_name": "C:/toppic_tutorial/tutorial_2/st_1_ms2.msalign",
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                                "scans": "898",
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                                "precursor_charge": "19",
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                                "feature_inte": "3.5725e+08"
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                            "proteoform_id": "0",
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                            "proteoform_mass": "10278.6589",
                            "n_acetylation": "0",
                            "unexpected_shift_number": "0",
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                                "first_residue_position": "1",
                                "last_residue_position": "91",
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                                        "position": "0",
                                        "acid": "M"
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                                        "acid": "P"
                                    },
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                                        "acid": "R"
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                                        "position": "3",
                                        "acid": "S"
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                                    {
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                                        "acid": "L"
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                                    {
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                                        "acid": "K"
                                    },
                                    {
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                                        "acid": "K"
                                    },
                                    {
                                        "position": "7",
                                        "acid": "G"
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                                    {
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                                        "acid": "P"
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                                        "acid": "F"
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                                        "acid": "D"
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                                        "acid": "L"
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                                        "acid": "H"
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                                        "acid": "L"
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                                        "acid": "L"
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                                        "acid": "K"
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                                        "acid": "K"
                                    },
                                    {
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                                        "acid": "V"
                                    },
                                    {
                                        "position": "19",
                                        "acid": "E"
                                    },
                                    {
                                        "position": "20",
                                        "acid": "K"
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                                        "acid": "A"
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                                        "acid": "E"
                                    },
                                    {
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                                        "acid": "S"
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                                        "acid": "G"
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                                        "acid": "D"
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                                        "acid": "K"
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                                        "acid": "K"
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                                        "acid": "P"
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                                        "acid": "T"
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