You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl (2S)-2-[[(2R,3R)-3-methoxy-3-[1-[(3R,4S,5S)-3-methoxy-5-methyl-4-[methyl-[(2S)-3-methyl-2-[[(2S)-3-methyl-2-[methyl-[[4-[(2-methylpropan-2-yl)oxycarbonyloxy]phenyl]methyl]amino]butanoyl]amino]butanoyl]amino]heptanoyl]pyrrolidin-2-yl]-2-methylpropanoyl]amino]-3-phenylpropanoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C52H81N5O11
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