(5S,7S)-1,7-dibenzyloxy-9-tert-(butyldimethylsilyloxy)-5-[(S)-2-acetoxy-2-phenylacetoxy]-8,8-dimethylnonan-3-one

(2R,6R)-6-[(4S)-4-benzyloxy-3,3-dimethyl-2-oxohex-5-enyl]-2-[(tert-butyldiphenylsilyloxy)methyl]-4-methylidenetetrahydropyran