(2S,4R,5S)-1-[(2R,4R,5R,6S)-6-[(R)-2-((R)-2,2-Dimethyl-[1,3]dioxolan-4-yl)-1-methyl-ethyl]-2-(4-methoxy-phenyl)-5-triethylsilanyloxy-[1,3]dioxan-4-yl]-4-methyl-5-(2-trimethylsilanyl-ethoxymethoxy)-hexan-2-ol