You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[(8aR)-9-[4-(1,2,3,4,5,6-hexahydronaphthalen-2-yl)phenyl]-1,2,4b,8a-tetrahydrocarbazol-2-yl]-8-phenyl-8-azatetracyclo[7.5.0.02,7.012,14]tetradeca-3,10,12(14)-triene is the IUPAC name of a molecule. Please give its molecular formula.
user
C47H46N2
assistant