5 c 3 ) 2 =- 8 July 8, 2019 16 32 64 128 5 c 3 )+ 2 =- 8 3 c 4 )- 5 c 2 4c 8 5 8-dihydroindolo 2 3-c carbazole 5 2 c 8 1 3 5 3+2 8 5) 2 8-5 3 3 c 5 C-8 3=-5 4
