2 4 5 6 tetra 9h carbazol 9 yl isophthalonitrile July 8, 2019 16 32 64 128 2 4 5 6-tetra(carbazol-9-yl)isophthalonitrile 2 4 5 6-tetra(9h-carbazol-9-yl)-1 3-dicyanobenzene
