You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 7-naphthalen-2-yl-5-N,5-N,9-N,9-N,7-pentakis-phenylbenzo[c]fluorene-5,9-diamine is given. What is its corresponding molecular formula?
user
C57H40N2
assistant