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(1'R,2R,3'S,3a'S,5'S,7a'S)-5'-((E)-5-(furan-3-yl)-2-methylpent-1-en-1-yl)-1'-hydroxy-3-methoxy-3',4,7'-trimethyl-1',2',3',3a',5',7a'-hexahydro-5H-spiro[furan-2,4'-inden]-5-one
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(1'S,2S,3'S,3a'R,5'R,7a'R)-5'-((E)-5-(furan-3-yl)-2-methylpent-1-en-1-yl)-1'-hydroxy-3-methoxy-3',4,7'-trimethyl-1',2',3',3a',5',7a'-hexahydro-5H-spiro[furan-2,4'-inden]-5-one