You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [8-[4-[2-(9,9-dimethylfluoren-1-yl)-3-sulfanylphenyl]phenyl]sulfanyl-9,9-dimethylfluoren-2-yl]-phenylmethanone into its molecular formula.
user
C49H38OS2
assistant