You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[(6Z)-6-[[1-(2-ethenyl-3-ethylphenyl)indol-2-yl]methylidene]phenalen-1-yl]-N-[(4Z)-hepta-4,6-dienyl]-N-[(4Z)-hepta-4,6-dien-3-yl]aniline is the IUPAC name of a molecule. Please give its molecular formula.
user
C52H50N2
assistant