You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 3-amino-2-[[(E)-3-pyridin-3-ylprop-2-enoyl]amino]-5,7-dihydro-4H-thieno[2,3-c]pyridine-6-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H18N4O3S
assistant