4-[(1E,5Z)-(S)-3,11-Bis-(tert-butyl-dimethyl-silanyloxy)-2-methyl-undeca-1,5-dienyl]-2-methyl-thiazole

(14Z,18E)-(3S,6R,7S,8S,17S)-3,7-Bis-(tert-butyl-dimethyl-silanyloxy)-17-hydroxy-4,4,6,8,18-pentamethyl-19-(2-methyl-thiazol-4-yl)-5-oxo-nonadeca-14,18-dienoic acid