You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
11-(4,6-diphenyl-1,3,5-triazin-2-yl)-14-phenyl-14-azatetracyclo[13.4.0.02,7.08,13]nonadeca-1(19),2,4,6,8(13),9,11,15,17-nonaene is the IUPAC name of a molecule. Please give its molecular formula.
user
C39H26N4
assistant