(1S,2S,3S,4R,5R,6S)-3-((t-butyldimethylsilyl)oxy)-6-(N-(o-carbamoyloxypiperonyl)-N-(p-nitrobenzenesulfonyl)amino)-4,5-epoxy-1,2-O-isopropylidenecyclohexane-1,2-diol

tert-butyl (3aS,3bR,10bS,11R,12S,12aS)-11-acetoxy-12-((tert-butyldimethylsilyl)oxy)-6-((diethylcarbamoyl)oxy)-2,2-dimethyl-5-oxo-3a,5,10b,11,12,12a-hexahydrobis([1,3]dioxolo)[4,5-c:4',5'-j]phenanthridine-4(3bH)-carboxylate

(1R,2R,3S,4R,4aR,10bS)-1-acetoxy-2-((t-butyldimethylsilyl)oxy)-7-(o-carbamoyloxypiperonyl)-3,4-(isopropylidenedioxy)-8,9-(methylenedioxy)-5-(p-nitrobenzenesulfonyl)-1,1a,2,3,4,4a,6-heptahydrophenanthridine