You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl N-[(2S)-5-amino-1-[[(2S,3R)-1-[[(2S,3S,5R)-6-(butylamino)-1-cyclohexyl-3-hydroxy-5-methyl-6-oxohexan-2-yl]amino]-3-hydroxy-1-oxobutan-2-yl]amino]-1,5-dioxopentan-2-yl]carbamate is the IUPAC name of a molecule. Please give its molecular formula.
user
C31H57N5O8
assistant