(41S,12S,13aR)-methyl 13a-ethyl-12-hydroxy-41,5,6,12,13,13a-hexahydro-3H-indolo[3,2,1-de]pyrido[3,2,1-ij][1,5]naphthyridine-12-carboxylate
(41S,12S,13aR)-methyl 13a-ethyl-12-hydroxy-41,5,6,12,13,13a-hexahydro-3H-indolo[3,2,1-de]pyrido[3,2,1-ij][1,5]naphthyridine-12-carboxylate