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system
Provide the molecular formula for the IUPAC named substance 2-(9-dibenzofuran-3-ylcarbazol-1-yl)benzene-1,3-dicarbonitrile;2-(9-dibenzothiophen-3-ylcarbazol-1-yl)benzene-1,3-dicarbonitrile;2-[9-(9,9-dimethylfluoren-3-yl)carbazol-1-yl]benzene-1,3-dicarbonitrile;2-[9-(5,5-diphenylbenzo[b][1]benzosilol-2-yl)carbazol-1-yl]benzene-1,3-dicarbonitrile .
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C143H84N12OSSi
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