(R)-3-{(4R,5R,6S)-6-[(R)-3-(tert-Butyl-diphenyl-silanyloxymethyl)-pentyl]-2,2,5-trimethyl-[1,3]dioxan-4-yl}-butan-2-one

(2S,3S,4S,6R,8S,9S)-3,9-dimethyl-8-{(R)-2-[(tert-butyldimethylsilyl)-oxy]-1-propyl}-2-[(R)-3-ethyl-5-(E)-iodo-4-pentenyl]-1,7-dioxaspiro[5.5]undecan-4-ol