[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is an N-acylglycine having nicotinoyl as the acyl substituent. It has a role as a human urinary metabolite."}, {"from": "gpt", "value": "[C][=C][C][=Branch1][=Branch1][=C][N][=C][Ring1][=Branch1][C][=Branch1][C][=O][N][C][C][=Branch1][C][=O][O]"}]