(2Z,6E,8E)-(4R,10R)-11-(tert-Butyl-dimethyl-silanyloxy)-2-ethyl-4,8,10-trimethyl-undeca-2,6,8-trienoic acid methyl ester

tert-Butyl-[(3E,5E,9Z,11E)-(2R,8R)-10-ethyl-12-((2R,6R)-6-isopropoxy-3,6-dihydro-2H-pyran-2-yl)-2,4,8-trimethyl-dodeca-3,5,9,11-tetraenyloxy]-dimethyl-silane