[{"from": "human", "value": "Please give me some details about this molecule. [C][Branch1][O][C][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][N][C][N][C][=Branch1][C][=O][N]"}, {"from": "gpt", "value": "The molecule is an alpha-amino acid anion that is the conjugate base of citrulline, obtained by deprotonation of the carboxy group. It is a conjugate base of a citrulline."}]