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methyl (12Z,14E,16R,17R,18R,19R,20R,21R,22S,23R,24R,25Z)-7-(acetyloxy)-17,19,21,23,24,27-hexahydroxy-4,8,12,16,18,22,24,26-octamethyl-5,11-dioxo-5,10,11,16,17,18,19,20,21,22,23,24-dodecahydro-6,9-(met related products: