You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 4,14-bis[4-(N-phenylanilino)phenyl]-7,11-diazoniatricyclo[9.4.0.02,7]pentadeca-1(11),2(7),3,5,12,14-hexaene-9-carboxylic acid .
user
C50H40N4O2+2
assistant