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  • (7E,9E,13Z)-(3S,4R,4aR,6aS,11S,12R,18R,20aR,20bS)-4-Hydroxy-12-methoxymethoxy-3,6,11,18,20a-pentamethyl-20-oxo-1,2,3,4,4a,11,12,15,16,17,18,20,20a,20b-tetradecahydro-6aH-19-oxa-cyclohexadeca[a]naphthalene-13-carboxylic acid

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