1H-Indolo(3,2,1-de)(1,5)naphthyridine, 2,3,3a,4,5,6-hexahydro-3,6-dimethyl- 2,3,3a,4,5,6-Hexahydro-3,6-dimethyl-1H-indolo(3,2,1-de)(1,5)naphthyridine 65285-01-0