You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[4-[4-(3-oxo-2,4,5-triphenylcyclopenta-1,4-dien-1-yl)-2-(2,3,4-trimethylbenzoyl)phenoxy]phenyl]-2,4,5-triphenylcyclopenta-2,4-dien-1-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C68H48O4
assistant