You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name tert-butyl (2S)-4-[4-[[[4-[[(7R)-8-cyclopentyl-7-ethyl-5-methyl-6-oxo-7H-pteridin-2-yl]amino]-3-methoxybenzoyl]amino]methyl]phenoxy]-2-(phenylmethoxycarbonylamino)butanoate into its molecular formula.
user
C45H55N7O8
assistant