1H-indolo[3,2,1-de][1,5]naphthyridin-6-ol, 2,3,3a,4,5,6-hexahydro-3-methyl-, (3aS,6S)- InChI=1/C15H18N2O/c1-16-9-8-11-10-4-2-3-5-12(10)17-14(18)7-6-13(16)15(11)17/h2-5,13-14,18H,6-9H2,1H3/t13-,14-/m0/s rel-(3aR,6R)-3-methyl-2,3,3a,4,5,6-hexahydro-1H-indolo[3,2,1-de]-1,5-naphthyridin-6-ol