You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
19-(4-dibenzofuran-3-yl-6-phenyl-1,3,5-triazin-2-yl)-14-phenyl-9-oxa-15-azapentacyclo[11.8.0.02,10.03,8.016,21]henicosa-1(13),2(10),3,5,7,11,14,16(21),17,19-decaene;19-(4-dibenzofuran-4-yl-6-phenyl-1,3,5-triazin-2-yl)-14-phenyl-9-oxa-15-azapentacyclo[11.8.0.02,10.03,8.016,21]henicosa-1(13),2(10),3,5,7,11,14,16(21),17,19-decaene;19-(4-dibenzothiophen-3-yl-6-phenyl-1,3,5-triazin-2-yl)-14-phenyl-9-oxa-15-azapentacyclo[11.8.0.02,10.03,8.016,21]henicosa-1(13),2(10),3,5,7,11,14,16(21),17,19-decaene The above is the IUPAC name of a molecule. Write its molecular formula.
user
C138H78N12O5S
assistant