1,3,4,4a,5,6,11,11a-octahydro-2H-pyrido[3,2-b]carbazol-2-one 2H-pyrido[3,2-b]carbazol-2-one, 1,3,4,4a,5,6,11,11a-octahydro- InChI=1/C15H16N2O/c18-15-6-5-9-7-14-11(8-13(9)17-15)10-3-1-2-4-12(10)16-14/h1-4,9,13,16H,5-8H2,(H,17,18