You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[3-[3-[2-fluoro-4-(trifluoromethyl)phenyl]phenyl]sulfinyl-5-methoxyphenyl]acetic acid by IUPAC nomenclature, provide its molecular formula.
user
C22H16F4O4S
assistant