[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is a polyunsaturated long-chain fatty acid with a 20-carbon backbone and 3 double bonds, originating from the 6th, 9th and 12th positions from the methyl end, with all bonds in the cis- configuration."}, {"from": "gpt", "value": "[C][C][C][C][C][/C][=C][\\C][/C][=C][\\C][/C][=C][\\C][C][C][C][C][C][C][=Branch1][C][=O][O]"}]