You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-[1-(4-acetyloxy-3,5-dimethoxybenzoyl)-3-(3,4-dichlorophenyl)pyrrolidin-3-yl]ethyl]-4-phenylpiperidine-4-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C35H38Cl2N2O7
assistant