1,3-Dioxane-4-methanol,6-[(1S,6R)-6-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-6-[(2S,3R)-2,3-dimethyl-4-[[tris(1-methylethyl)silyl]oxy]butyl]-3-[(methoxymethoxy)methyl]-2-cyclohexen-1-yl]-5-hydroxy-2,2-dimethyl-, (4R,5S,6S)-