[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a saturated fatty acid with a 15-carbon backbone. Pentadecylic acid is not normally synthesized by animals, but is found in trace amounts in dairy products."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][=Branch1][C][=O][O]"}]