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[(2S,3R,6R)-2-[[(1R,2R,5R,6S,7S,8R,9R,11R,13R)-6-[(2R,4R,5S,6S)-5-Acetyloxy-4-methoxy-4,6-dimethyloxan-2-yl]oxy-2-ethyl-9-methoxy-1,5,7,9,11,13-hexamethyl-4,12,16-trioxo-3,15,17-trioxabicyclo[12.3.0]heptadecan-8-yl]oxy]-6-methyl-3,6-dihydro-2H-pyran-3-yl]


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