(2E,4E,6E)-10-[1,3]Dioxolan-2-yl-8-ethyl-deca-2,4,6-trienoic acid methyl ester

(2E,4E,6E)-8-Ethyl-11-oxo-undeca-2,4,6-trienoic acid methyl ester

(2E,4E,6E,11E)-8-Ethyl-13-oxo-13-(1H-pyrrol-2-yl)-trideca-2,4,6,11-tetraenoic acid methyl ester

(E)-3-[(1R,3aS,4S,5R,7aR)-1-Ethyl-4-(1H-pyrrole-2-carbonyl)-2,3,3a,4,5,7a-hexahydro-1H-inden-5-yl]-acrylic acid methyl ester