You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 3-[5-[1-(thiophene-2-carbonyl)pyrazol-3-yl]furan-2-yl]thiophene-2-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H12N2O4S2
assistant