You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(8E,11E)-11-[4-[3-[(3E,5Z)-hepta-1,3,5-trien-4-yl]-6-phenylcarbazol-9-yl]-6-phenyl-1,3,5-triazin-2-yl]-14,14,21-trimethyl-1-azatetracyclo[11.7.1.02,7.015,20]henicosa-2,4,6,8,11,13(21),15,17,19-nonaene The above is the IUPAC name of a molecule. Write its molecular formula.
user
C57H47N5
assistant