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(3S,3aS,6aS,9S,10R,10aR)-9,10-dihydroxy-7,7-dimethyl-1-oxo-3-((tetrahydro-2H-pyran-2-yl)oxy)-3,3a,6,6a,7,8,9,10-octahydro-1H-naphtho[1,8a-c]furan-4-carbaldehyde
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(3S,3aS,6aS,10aR)-7,7-dimethyl-1-oxo-3-((tetrahydro-2H-pyran-2-yl)oxy)-3,3a,6,6a,7,8-hexahydro-1H-naphtho[1,8a-c]furan-4-carbaldehyde
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