(2R,3S,4aR,6R,8S,8aS)-8-Benzyloxy-6-(3-benzyloxy-propyl)-2-(tert-butyl-diphenyl-silanyloxymethyl)-2-methyl-octahydro-pyrano[3,2-b]pyran-3-ol

(2R,4S,4aS,5aR,8S,9R,10aS,11aR)-4-Benzyloxy-2-(3-benzyloxy-propyl)-9-[(2R,3S)-3-[3-(tert-butyl-diphenyl-silanyloxy)-propyl]-2-(toluene-4-sulfonyl)-oxiranylmethyl]-5a-methyl-dodecahydro-1,5,10-trioxa-cyclohepta[b]naphthalen-8-ol