1,2,3,3a-Tetrahydro-3,6-dimethyl-4H-indolo(3,2,1-de)(1,5)naphthyridine 1H-Indolo(3,2,1-de)(1,5)naphthyridine, 2,3,3a,4-tetrahydro-3,6-dimethyl- 3,6-Dimethyl-2,3,3a,4-tetrahydro-1H-indolo(3,2,1-de)(1,5)naphthyridine 65284-93-7