You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-(2-dibenzofuran-2-yl-11,11,12,12-tetramethyl-5,6-diphenylindeno[2,1-a]fluoren-9-yl)dibenzofuran;2-[2-dibenzofuran-2-yl-11,11,12,12-tetramethyl-5-(3-phenylphenyl)indeno[2,1-a]fluoren-9-yl]dibenzofuran;9-phenyl-3-[11,11,12,12-tetramethyl-2-(9-phenylcarbazol-3-yl)indeno[2,1-a]fluoren-9-yl]carbazole;2-phenyl-8-[11,11,12,12-tetramethyl-2-(8-phenyldibenzofuran-2-yl)indeno[2,1-a]fluoren-9-yl]dibenzofuran by IUPAC nomenclature, provide its molecular formula.
user
C240H170N2O6
assistant