26904-64-3

(41S,7aS,13aR,13bR)-10-Oxo-2,3,6,7,7a,8,10,13,13a,13b-decahydro-1H,5H-dipyrido[2,1-f:3′,2′,1′-ij][1,6]naphthyridine 4(41H)-oxide