[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is a monocarboxylic acid anion that is the conjugate base of guanidinoacetic acid, obtained by deprotonation of the carboxy group. It is a conjugate base of a guanidinoacetic acid."}, {"from": "gpt", "value": "[C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][N][=C][Branch1][C][N][N]"}]