2 2 4 5 6 July 8, 2019 16 32 64 128 2 2 4 5 6 7 2 2 4 5 6 8 2 2 3 4 5 6 1 2 2 4 5 6 2 2 4 x 3 5 6 2 4 5 6 7 8 2 4 5 6 tetra 9h carbazol 9 yl isophthalonitrile 2 4 5 6-tetrachloro-m-xylene 2 4 5 6 as a fraction 2 4 5 6 9 2 4 5 6 7 9 2 4 5 6 1 3 2 4 5 6 10 2 4 5 60 2 4 5 6 1 8
