(2S,3S,4S)-4-Benzyloxy-3-benzyloxymethyl-6-(tert-butyl-dimethyl-silanyloxy)-3-hydroxy-2-isopropenyl-hexanoic acid ethyl ester

(S)-1,3-Bis-benzyloxy-5-(tert-butyl-dimethyl-silanyloxy)-pentan-2-one