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(3Ar,3bS,6R,6aS,7S,8S,9aS,9bR,10R,11R,11aS)-7-((tert-Butyldimethylsilyl)oxy)-6,6a,9b,11-tetrahydroxy-8,10-dimethyl-5-methylene-11a-(prop-1-en-2-yl)tetradecahydroazuleno[5',4':3,4]benzo[1,2-d][1,3]dioxol-2-one


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