You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
but-1-yne;(2S)-1-[2-[(1-cyclohexyl-2-oxo-2-phenylethyl)carbamoylamino]-3,3-dimethylbutanoyl]-N-[1,2-dioxo-1-(prop-2-enylamino)pentan-3-yl]pyrrolidine-2-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C38H55N5O6
assistant