{"id":672,"sequence":"GPNGDAGRPGEPGLMGPR","proforma":"[Oxidation]^2?GPNGDAGRPGEPGLMGPR","modifications":[{"name":"Oxidation","count":2,"n_term":false,"unimod":35,"position":null,"residues":"P"}],"mods_ambiguous":false,"neutral_mass":1765.8165799437002,"mh":1766.82386,"url":"https://msipep.com/peptide/672/"}