You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule tert-butyl N-[1-[(2S)-2-[[4-[2-[4-[[(2S)-1-[1-[(2-methylpropan-2-yl)oxycarbonylamino]cyclopropanecarbonyl]pyrrolidine-2-carbonyl]amino]phenyl]ethenyl]phenyl]carbamoyl]pyrrolidine-1-carbonyl]cyclopropyl]carbamate .
user
C42H54N6O8
assistant