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(4R-Cis)-6-hydroxymethyl-2,2-dimethyl-1,3-dioxane-4-aceti acid,1,1-dimethylethyl ester(D-6)

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(4R-Cis)-6-hydroxymethyl-2,2-dimethyl-1,3-dioxane-4-aceti acid,1,1-dimethylethyl ester(D-6)