You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-1-[(9S,12R,17R,20S,23S)-12-amino-20-(2-amino-2-oxoethyl)-23-(3-amino-3-oxopropyl)-9-[(4-hydroxyphenyl)methyl]-8,11,19,22,25-pentaoxo-14,15-dithia-7,10,18,21,24-pentazaspiro[5.19]pentacosane-17-carbonyl]-N-[(2R)-1-[(2-amino-2-oxoethyl)amino]-5-(diaminomethylideneamino)-1-oxopentan-2-yl]pyrrolidine-2-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C44H67N15O12S2
assistant