[{"from": "human", "value": "What can you tell me about this molecule? [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 a 16-carbon backbone and exactly 4 double bonds."}]