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-N-methyl-N-[2-[(4R)-4-methyl-6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl]-2-oxoethyl]benzenesulfonamide .
user
C17H19ClN2O3S2
assistant