6-(5-{4-[5-(1-methoxymethoxy-3,9-dimethyl-5-methylene-2-triisopropylsilanyloxy-deca-6,9-dienyl)-tetrahydro-furan-2-yl]-but-1-enyl}-2,2-dimethyl-[1,3]dioxolan-4-yl)-2-methyl-hexa-3,5-dienoic acid