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 2'-(9H-benzo[7]annulen-7-yl)-10-[10-[(1E,3Z,6Z,8Z)-cyclodeca-1,3,6,8-tetraen-1-yl]anthracen-9-yl]-7'-naphthalen-2-ylspiro[acridine-9,9'-fluorene] .
user
C70H49N
assistant