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(1S)-1alpha-[[(4S)-2-Oxo-5,5-dimethyl-1,3-dioxolane-4beta-yl]methyl]-5alpha-isobutyryl-6,6-dimethyl-7beta-(3-hydroxy-3-methylbutyl)bicyclo[3.3.1]nonane-2-ene-4,9-dione


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