[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is an N-acylglycinate arising from deprotonation of the carboxy group of N-acetylglycine; major species at pH 7.3. It has a role as a human metabolite. It is a conjugate base of a N-acetylglycine."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][N][C][C][=Branch1][C][=O][O-1]"}]