12H-Indolo(2,3-a)pyrrolo(3,4-c)carbazole-12-propanenitrile, 5,6,7,13-tetrahydro-13-methyl-5-oxo- 13-Methyl-5-oxo-5,6,7,13-tetrahydro-12H-indolo(2,3-a)pyrrolo(3,4-c)carbazole-12-propanenitrile 136194-77-9 Go 6976 Go-6976 Goe 6976