(5S,7S)-7-benzyloxy-10-{(7R,9R)-9-tert-butyldimethylsilyloxymethyl-1,4,8-trioxaspiro[4.5]dec-7-yl}-1-(tert-butyldiphenylsilyloxy)-5-hydroxy-8,8-dimethyl-9-(2-trimethylsilylethoxy)methoxydecan-3-one

(3S,5R,7S)-7-benzyloxy-10-{(7R,9R)-9-(tert-butyldimethylsilyloxymethyl)-1,4,8-trioxaspiro[4.5]dec-7-yl}-1-tert-butyldiphenylsilyloxy-8,8-dimethyl-9-(2-trimethylsilylethoxy)methoxydecane-3,5-diol