You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (1Z)-5-fluoro-2-methyl-3-(3-methyl-2-methylidenebutyl)-1-[(4-methylsulfonylphenyl)methylidene]indene by IUPAC nomenclature, provide its molecular formula.
user
C24H25FO2S
assistant