(2R,3R,4R,5S)-3,4,5-Tris-benzyloxy-2-(3-hydroxy-propyl)-piperidine-1-carboxylic acid benzyl ester

{(1R,2R,3S,4S)-2,3,4-Tris-benzyloxy-1-[3-(tert-butyl-dimethyl-silanyloxy)-propyl]-5,6-dihydroxy-hexyl}-carbamic acid tert-butyl ester