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[(2S,3R,4S,6R)-2-[[(3Ar,4R,6R,8R,9R,10S,11S,12R,15R,15aR)-15-ethyl-11-[(2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyloxan-2-yl]oxy-8-methoxy-4,6,8,10,12,15a-hexamethyl-2,5,13-trioxo-3a,4,6,7,9,10,11,12,14,15-decahydrocyclotetradeca[d][1,3]dioxol-9-yl]oxy]


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