(Z)-8-Oxo-9-(triphenyl-λ5-phosphanylidene)-non-5-enoic acid methyl ester

(5Z,9E)-10-[(4R,5S)-2,2-Dimethyl-5-((Z)-oct-2-enyl)-[1,3]dioxolan-4-yl]-8-oxo-deca-5,9-dienoic acid methyl ester