You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-(9,9-dimethylfluoren-2-yl)-N-[2-(2,6-dimethylphenyl)-4-phenylphenyl]-9,9-dimethylfluoren-2-amine into its molecular formula.
user
C50H43N
assistant