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 (4S)-3-[2-(methoxycarbonylamino)acetyl]-4-[5-[4-[4-[(Z)-2-[2-[[2-(methoxycarbonylamino)acetyl]-propylamino]ethylideneamino]-1-(methylamino)ethenyl]phenyl]phenyl]-1H-imidazol-2-yl]imidazolidine-1-carboxylate .
user
C39H51N9O8
assistant