(2E,16E)-(4S,5R,6S,8R,9S,10S,12S,13S,14R)-5,9,13-Tris-(tert-butyl-dimethyl-silanyloxy)-17-iodo-4,6,8,10,12,14-hexamethyl-7,11-dioxo-heptadeca-2,16-dienoic acid

(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