(2E,4E)-5-((4S,5S)-2-Oxo-5-pentyl-[1,3]dioxolan-4-yl)-penta-2,4-dienal

(6E,8Z,10E,12E)-(S)-5-(tert-Butyl-diphenyl-silanyloxy)-13-((4S,5S)-2-oxo-5-pentyl-[1,3]dioxolan-4-yl)-trideca-6,8,10,12-tetraenoic acid ethyl ester

(2E,4E)-5-((4S,5S)-2-Oxo-5-pentyl-[1,3]dioxolan-4-yl)-penta-2,4-dienal