1H-Indolo(3,2,1-de)(1,5)naphthyridine, 2,3,3a,4,5,6-hexahydro-3-methyl- 2,3,3a,4,5,6-Hexahydro-3-methyl-1H-indolo(3,2,1-de)(1,5)naphthyridine 3-Methyl-1,2,3,3a,4,5-hexahydrocanthin 67877-74-1