You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance tert-butyl (3R)-3-[4-[methyl(phenylmethoxycarbonyl)amino]phenyl]-3-[[(2S)-2-phenylpropyl]amino]propanoate .
user
C31H38N2O4
assistant