You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1S,2R,7S,10R)-12,15-difluoro-5-methylidene-10-[4-(trifluoromethyl)phenyl]sulfonyl-17-oxa-5lambda6-thia-6-azatetracyclo[8.8.0.02,7.011,16]octadeca-11,13,15-triene 5-oxide is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H22F5NO4S2
assistant