You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 4-[3-[(4aE,7Z,9Z,12E)-6-methylidene-5-naphthalen-2-yl-11H-benzo[10]annulen-12-yl]phenyl]dibenzofuran .
user
C43H30O
assistant