6,18-Dihydrodinaphtho[2,3-i:2,3-i]benzo[1,2-a:4,5-a]dicarbazole-5,7,12,17,19,24-hexone 5g

6,18-Dihydrodinaphtho[2,3-i:2,3-i]benzo[1,2-a:4,5-a]dicarbazole-5,7,12,17,19,24-hexone 5g