You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule [1-[3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl]-2-(3,5-dichloro-1-oxidopyridin-1-ium-4-yl)ethyl] 2-(9H-fluoren-9-ylmethoxycarbonylamino)-4-trityloxybutanoate ?
user
C56H48Cl2F2N2O8
assistant