[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a beta-amino acid anion that is the conjugate base of 3-aminoisobutyric acid, arising from deprotonation of the carboxy group. It has a role as a metabolite. It is a conjugate base of a 3-aminoisobutyric acid and a 3-aminoisobutanoic acid zwitterion."}, {"from": "gpt", "value": "[C][C][Branch1][Ring1][C][N][C][=Branch1][C][=O][O-1]"}]