You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule N-[4-(8-azatetracyclo[13.3.1.02,7.09,14]nonadeca-1(18),2(7),3,5,9,11,13,15(19),16-nonaen-4-yl)phenyl]-N-(4-cyclohexa-1,3-dien-1-ylcyclohexa-1,3-dien-1-yl)-4-(9H-fluoren-3-yl)aniline ?
user
C55H42N2
assistant