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system
Name the molecular formula for the molecule established as 5-(4a,9a-dimethyl-1,2,3,4-tetrahydrocarbazol-9-yl)-17-(6-tert-butyl-4a,9a-dimethyl-1,2,3,4-tetrahydrocarbazol-9-yl)-8,14-di(dibenzofuran-4-yl)-11-methyl-8,14-diaza-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 using the IUPAC nomenclature.
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C75H69BN4O2
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