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(2S,2'R,5'S,2''R,3''S,5''R)-5''-((2S,3S,5R,6R)-6-Benzyloxymethyl-6-methoxy-3,5-dimethyl-tetrahydro-pyran-2-yl)-5-bromomethyl-5'-ethyl-2,5,3''-trimethyl-dodecahydro-[2,2';5',2'']terfuran
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(3R,5S,6S)-6-((2R,3S,5R,2'S,5'R,2''S)-5''-Bromomethyl-2'-ethyl-3,2'',5''-trimethyl-dodecahydro-[2,2';5',2'']terfuran-5-yl)-3,5-dimethyl-tetrahydro-pyran-2-one