You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 4-[3-(9,9-dimethylspiro[anthracene-10,9'-fluorene]-2-yl)phenyl]-7-methyl-2-phenyl-8-triphenylen-2-yl-5,6-dihydro-1,3-diazocine using the IUPAC nomenclature.
user
C65H48N2
assistant