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 N-[2-(difluoromethylsulfonyl)phenyl]-4-(6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl)-4-oxobutanamide .
user
C18H18F2N2O4S2
assistant