You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-methylpropyl N-[(1S)-2-[(4R)-2-[[1-[[2-[[(1S)-2-amino-2-oxo-1-phenylethyl]amino]-2-oxoethyl]amino]-1,2-dioxohexan-3-yl]carbamoyl]-4-(naphthalen-2-ylsulfonylamino)pyrrolidin-1-yl]-1-cyclohexyl-2-oxoethyl]carbamate by IUPAC nomenclature, provide its molecular formula.
user
C44H57N7O10S
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