(1S,2S,4S,5S)-1-{2-[(1R,2S,3S,4R,6R)-2,4-Bis-(tert-butyl-dimethyl-silanyloxy)-7-methoxy-6-(4-methoxy-benzyloxy)-1,3-dimethyl-heptyl]-[1,3]dithian-2-yl}-5-(tert-butyl-dimethyl-silanyloxy)-2-(3,4-dimethoxy-benzyloxy)-4-methoxy-dec-8-yn-1-ol