You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 2-[(2,6-difluorobenzoyl)amino]-6-propan-2-yl-5,7-dihydro-4H-thieno[2,3-c]pyridine-3-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H20F2N2O3S
assistant