(41S,13aS)-ethyl 13a-ethyl-8-methoxy-2,3,41,5,6,6a,6a1,13a-octahydro-1H-indolo[3,2,1-de]pyrido[3,2,1-ij][1,5]naphthyridine-12-carboxylate
(41S,13aS)-ethyl 13a-ethyl-8-methoxy-2,3,41,5,6,6a,6a1,13a-octahydro-1H-indolo[3,2,1-de]pyrido[3,2,1-ij][1,5]naphthyridine-12-carboxylate