[{"from": "human", "value": "Could you provide a description of this molecule? [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 long-chain fatty acid with an 18-carbon backbone and exactly three double bonds. At least 17 different isomers of this compound are recognized."}]