You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 5-carbamoyl-2-[[(E)-2-cyano-3-ethoxy-3-oxoprop-1-enyl]amino]-4-methylthiophene-3-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H17N3O5S
assistant