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system
Provide the molecular formula for the IUPAC named substance 5,17-bis(2-methylphenyl)-10,12-diphenyl-8,14-dioxa-1-borapentacyclo[11.7.1.02,7.09,21.015,20]henicosa-2(7),3,5,9(21),10,12,15(20),16,18-nonaene;9-(8,14-dioxa-1-borapentacyclo[11.7.1.02,7.09,21.015,20]henicosa-2,4,6,9,11,13(21),15,17,19-nonaen-11-yl)carbazole;9-(5,17-diphenyl-8,14-dioxa-1-borapentacyclo[11.7.1.02,7.09,21.015,20]henicosa-2(7),3,5,9,11,13(21),15(20),16,18-nonaen-11-yl)carbazole;5,10,12,17-tetraphenyl-8,14-dioxa-1-borapentacyclo[11.7.1.02,7.09,21.015,20]henicosa-2(7),3,5,9(21),10,12,15(20),16,18-nonaene .
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C158H102B4N2O8
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