(2R,3S,4S,5S,6S,8R)-1-((R)-4-Benzyl-2-thioxo-thiazolidin-3-yl)-8-[(2R,4S,5S,6R)-6-[(1R,2R)-2-(tert-butyl-dimethyl-silanyloxy)-1-methyl-butyl]-2-(4-methoxy-phenyl)-5-methyl-[1,3]dioxan-4-yl]-3-hydroxy-2,4,6-trimethyl-5-triethylsilanyloxy-nonan-1-one