112853-75-5 2-Butanone, 4-(1,3,4,4a,5,6,11,11a-octahydro-2H-pyrido(4,3-b)carbazol-2-yl)-, trans- 4a,11a-trans-2-gamma-Ketobutyl-1,2,3,4,4a,5,11,11a-octahydro-6H-pyrido(4,3-b)carbazole trans-4-(1,3,4,4a,5,6,11,11a-Octahydro-2H-pyrido(4,3-b)carbazol-2-yl)-2-butanone