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 2-(4-chlorophenyl)-1-[4-[4-(trifluoromethoxy)phenyl]-4,5,6,7-tetrahydrothieno[3,2-c]pyridin-7-yl]ethanone ?
user
C22H17ClF3NO2S
assistant