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(6aS,7aR,8aR,9S,9aR)-9-((tert-butyldimethylsilyl)oxy)-4-hydroxy-6-(4-methoxybenzyl)-6a,7,7a,8a,9,9a-hexahydro-[1,3]dioxolo[4,5-j]oxireno[2,3-b]phenanthridin-5(6H)-one
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(3aS,3bR,12S,12aR)-6,12-dihydroxy-4-(4-methoxybenzyl)-2,2-dimethyl-3b,4,12,12a-tetrahydrobis([1,3]dioxolo)[4,5-c:4',5'-j]phenanthridin-5(3aH)-one
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(3aS,3bR,12S,12aR)-4-(4-methoxybenzyl)-2,2-dimethyl-5-oxo-3a,3b,4,5,12,12a-hexahydrobis([1,3]dioxolo)[4,5-c:4',5'-j]phenanthridine-6,12-diyl diacetate
