You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(2,6-difluorophenyl)-2-(2-ethoxy-N-(4-methylsulfanylphenyl)sulfonylanilino)acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H22F2N2O4S2
assistant