You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[1-[4-(6-methylcyclohexa-1,3-dien-1-yl)phenyl]-2-[3-[3-[4-(2-methylphenyl)-3-(1-phenylethenyl)phenyl]phenyl]phenyl]ethyl]-9,9-diphenylfluorene by IUPAC nomenclature, provide its molecular formula.
user
C73H58
assistant