The molecule is a straight-chain polyunsaturated fatty acid comprising tridecanoic acid having (E)- and (Z)-double bonds at positions 3 and 5 respectively, an allenic system at positions 7-9 and triple bonds at positions 10 and 12. It is a long-chain fatty acid, a polyunsaturated fatty acid, a straight-chain fatty acid, an acetylenic fatty acid, an allenic fatty acid and a terminal acetylenic compound.