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 4-chloro-5-[3-[(2-chlorophenyl)methylsulfonyl-piperidin-4-ylamino]phenyl]-3-(2-methoxy-2-oxoethoxy)thiophene-2-carboxylic acid .
user
C26H26Cl2N2O7S2
assistant