You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl (6S)-6-(4-methoxycarbonylphenyl)-4-methyl-3-phenyl-2-sulfanylidene-1,6-dihydropyrimidine-5-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H22N2O4S
assistant