You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-amino-2-[[(E)-3-(furan-2-yl)prop-2-enoyl]amino]-5,7-dihydro-4H-thieno[2,3-c]pyridine-6-carboxylic acid by IUPAC nomenclature, provide its molecular formula.
user
C15H15N3O4S
assistant