[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is an amino acid zwitterion obtained by transder of a proton from the carboxy to the amino group of (S)-3-aminoisobutyric acid; major species at pH 7.3. It is a tautomer of a (S)-3-aminoisobutyric acid."}, {"from": "gpt", "value": "[C][C@@H1][Branch1][Ring1][C][NH3+1][C][=Branch1][C][=O][O-1]"}]