[{"from": "human", "value": "Describe this molecule. [C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][/C][=C][\\C][C][/C][=C][\\C][C][C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a polyunsaturated fatty acid that is hexacosanoic acid carrying double bonds at positions 5 and 9 respectively (the 5Z,9Z-isomer). It is a polyunsaturated fatty acid, a straight-chain fatty acid, a very long-chain fatty acid and an olefinic fatty acid."}]