[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][Branch1][O][C][N][C][Ring1][Branch1][C][=Branch1][C][=O][O-1][O]"}, {"from": "gpt", "value": "The molecule is the alpha-amino-acid anion formed by loss of a proton from the carboxy group of 4-hydroxyproline. It is a conjugate base of a 4-hydroxyproline."}]