You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl)-N-[(1R)-1-(4-fluorophenyl)ethyl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H19FN2OS
assistant