1-[(3aR,5R,6R,6aR)-6-((2S,3S,4aR,5R,7R,8R,8aS)-8-Benzyloxy-5-benzyloxymethyl-2,3-dimethoxy-2,3-dimethyl-hexahydro-pyrano[3,4-b][1,4]dioxin-7-yloxy)-2,2-dimethyl-tetrahydro-furo[2,3-d][1,3]dioxol-5-yl]-2-phenyl-ethanol