You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-[(4-chlorophenyl)methylidene]-3-[2-[4-[(4-chlorophenyl)methylidene]-5-oxo-2-phenylimidazol-1-yl]ethyl]-2-phenylimidazol-4-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C34H24Cl2N4O2
assistant