You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(3-fluoro-4-methylsulfonylphenyl)-4-methylsulfanyl-N-(3-pyridin-2-ylphenyl)benzamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H21FN2O3S2
assistant