You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(methylcarbamoyl)-2-[(4R)-4-thiophen-2-yl-6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H17N3O2S2
assistant