(1R,2S,3S,4S,4aR,11bR)-1-Acetoxy-2,3,4-tribenzoyloxy-1,3,4,4a,5,11b-hexahydro<1,3>dioxolo<4,5-j>phenanthridin-6(2H)-on

(1R,2S,3S,4S,4aR,11bR)-1,2,3,4-Tetrabenzoyloxy-1,3,4,4a,5,11b-hexahydro<1,3>dioxolo<4,5-j>phenanthridin-6(2H)-on

(1R,2S,3S,4S,4aS,11bS)-1,2,3,4-Tetraacetoxy-1,3,4,4a,5,11b-hexahydro<1,3>-dioxolo<4,5-j>phenanthridin-6(2H)-on