Synonyms: 9H-Carbazole, 9,9',9'',9'''-[1,3,6,8-pyrenetetrayltetrakis[2,1-ethynediyl(9,9-diheptyl-9H-fluorene-7,2-diyl)-2,1-ethynediyl-4,1-phenylene]]tetrakis[3,6-bis[2-[7-[2-[4-[3,6-bis(1,1-dimethylethyl)-9H-carbazol-9-yl]phenyl]ethynyl]-9,9-diheptyl-9H-fluoren-2-yl]ethynyl]-