Dienoate

methyl 7-{3-hydroxy-2-[(1E)-3-hydroxy-4-phenoxybut-1-en-1-yl]-5-oxocyclopentyl}hepta-4,5-dienoate

Methyl (2z,4z)-5-chloro-2-(chloromethyl)-5-(4-methylphenyl)penta-2,4-dienoate

METHYL (2E,4E)-OCTADECA-2,4-DIENOATE

ethyl (2Z,4E)-3,7,11-trimethyldodeca-2,4-dienoate