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4-(6-[1,1'-BIPHENYL]-4-YL-1,1,6,6-TETRAPHENYL-2,4-HEXADIYNYL)-1,1'-BIPHENYL 4-(6-[1,1'-BIPHENYL]-4-YL-1,1,6,6-TETRAPHENYL-2,4-HEXADIYNYL)-1,1'-BIPHENYL