You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(9,9-dimethylfluoren-2-yl)-N-(5,5-diphenylbenzo[b][1]benzosilol-3-yl)-9-(4-phenylphenyl)carbazol-3-amine is the IUPAC name of a molecule. Please give its molecular formula.
user
C63H46N2Si
assistant