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8,11-Epoxy-9,12-ethano-11,15-methano-11H-[1,8]dioxacycloheptadecino[4,3-b]pyridine-5,17-dione,10,13,14,22-tetrakis(acetyloxy)-12-[(acetyloxy)methyl]-21-(benzoyloxy)-7,8,9,10,12,13,14,15,18,19-decahydr related products: