You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-(9,9-dimethylfluoren-2-yl)-N-(3-naphtho[1,2-b][1]benzofuran-7-ylphenyl)dibenzofuran-3-amine .
user
C49H33NO2
assistant