(4aS,8R,8aS)-3,4'-Dihydroxy-7'-(2-hydroxyethyl)-4,4,7,8a-tetramethylspiro[2,3,4a,5,6,7-hexahydro-1H-naphthalene-8,2'-3,8-dihydrofuro [2,3-E]isoindole]-6'-one
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