You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-5-amino-2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-5-amino-2-[[(2S)-5-amino-2-[[(2S)-1-[(2S)-2-amino-3-phenylpropanoyl]pyrrolidine-2-carbonyl]amino]-5-oxopentanoyl]amino]-5-oxopentanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-3-hydroxybutanoyl]amino]-5-oxopentanoyl]amino]-3-methylbutanoyl]amino]-4-methylpentanoyl]amino]-3-methylpentanoic acid by IUPAC nomenclature, provide its molecular formula.
user
C56H87N15O15
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