2,4,5,6-Tetrakis (3,6-diphenyl-9H-carbazol-9-yl) isophthalonitrile

C1=CC=C (C=C1) C2=CC3=C (C=C2) N (C4=C3C=C (C=C4) C5=CC=CC=C5) C6=C (C (=C (C (=C6C#N) N7C8=C (C=C (C=C8) C9=CC=CC=C9) C1=C7C=CC (=C1) C1=CC=CC=C1) N1C2=C (C=C (C=C2) C2=CC=CC=C2) C2=C1C=CC (=C2) C1=CC=CC=C1) N1C2=C (C=C (C=C2) C2=CC=CC=C2) C2=C1C=CC (=C2) C1=CC=CC=C1) C#N