You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(9,9-dimethylfluoren-3-yl)-N-ethyl-4-[4-(9-phenylcarbazol-3-yl)phenyl]aniline The above is the IUPAC name of a molecule. Write its molecular formula.
user
C47H38N2
assistant