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3,6-Di(carbazol-9-yl)-9-[9-[6-[3-(3-carbazol-9-yl-6-methylcarbazol-9-yl)-6-[3,6-di(carbazol-9-yl)carbazol-9-yl]carbazol-9-yl]-9-ethylcarbazol-3-yl]-6-[3,6-di(carbazol-9-yl)carbazol-9-yl]carbazol-3-yl]carbazole


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