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(5R,8R,10R)-10-[(3S,7S)-3-Hydroxy-4-methylidene-7-[(2R,5R)-2-methyl-5-(2-triethylsilyloxypropan-2-yl)oxolan-2-yl]-7-triethylsilyloxyheptyl]-8-[(2S)-2-methyl-5-oxooxolan-2-yl]-1,3,9-trioxaspiro[4.5]decan-2-one


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