[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a polyunsaturated fatty aldehyde that is heptadecenal having three double bonds located at postions 8, 11 and 14 (the 8Z,11Z,14Z-geoisomer). It has a role as a metabolite."}, {"from": "gpt", "value": "[C][C][/C][=C][\\C][/C][=C][\\C][/C][=C][\\C][C][C][C][C][C][C][=O]"}]