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  • Acetic acid (R)-2-((1R,4aS,4bS,8aS,10aS)-2-formyl-4b,8,8,10a-tetramethyl-tetradecahydro-phenanthren-1-yl)-1-(2-hydroxy-5-oxo-2,5-dihydro-furan-3-yl)-ethyl ester

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