[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a hydroxycinnamic acid. It has a role as a metabolite."}, {"from": "gpt", "value": "[C][O][C][=C][C][=Branch1][O][=C][C][=Branch1][Branch1][=C][Ring1][=Branch1][O][O][C][/C][=C][/C][=Branch1][C][=O][N][C][C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O]"}]