You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-(5,11-diphenyl-8H-cyclohepta[b]naphthalen-3-yl)-5-phenyl-3,5-diazapentacyclo[9.6.2.02,6.07,19.014,18]nonadeca-1(17),2(6),3,7,9,11(19),12,14(18),15-nonaene The above is the IUPAC name of a molecule. Write its molecular formula.
user
C50H32N2
assistant