You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3,15-bis(9-phenylcarbazol-2-yl)-2,5,14,17-tetrazapentacyclo[14.8.0.04,13.06,11.018,23]tetracosa-1(24),2,4,6,8,10,12,14,16,18,20,22-dodecaene The above is the IUPAC name of a molecule. Write its molecular formula.
user
C56H34N6
assistant