You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 4-carbamoyl-3-methyl-5-[(2-phenyl-2-phenylsulfanylacetyl)amino]thiophene-2-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H20N2O4S2
assistant