(2S,4S,5R,6R,7S,8S,9R,10S,11S)-11-Benzyloxy-2-{(4S,5R,6R)-6-[(S)-2-(tert-butyl-diphenyl-silanyloxy)-1-methyl-ethyl]-2,2,5-trimethyl-[1,3]dioxan-4-yl}-9-(4-methoxy-benzyloxy)-6,8,10-trimethyl-5,7-bis-triethylsilanyloxy-dodecan-4-ol