You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N,N-bis(9,9-dimethylfluoren-2-yl)-7-(3-phenylphenyl)naphtho[1,2-b][1]benzofuran-5-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C58H43NO
assistant