You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-[(2-methyl-4-pyrimidin-2-ylsulfanylphenyl)carbamoyl]phenyl]thiophene-2-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H18N4O2S2
assistant