5 c 3 ) 2 =- 8 July 8, 2019 16 32 64 128 5 c 3 )+ 2 =- 8 5 c 1 )- 2 c 3 )- 2c =- 8 5 8 dihydroindolo 2 3 c carbazole 3 c 4 )- 5 c 2 4c 8 5 - 8 2 + 3 + 4 + 5 + 6
