You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
12-[4-[4-dibenzothiophen-3-yl-6-(9-phenylcarbazol-3-yl)-1,3,5-triazin-2-yl]-6H-naphtho[2,1-c]chromen-2-yl]-12-azapentacyclo[11.8.0.02,11.04,9.015,20]henicosa-1(21),2,4,6,8,10,13,15,17,19-decaene is the IUPAC name of a molecule. Please give its molecular formula.
user
C70H41N5OS
assistant