[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is an amino acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of N-isopropyl-L-glutamine; major species at pH 7.3. It has a role as a bacterial metabolite. It is a tautomer of a N-isopropyl-L-glutamine."}, {"from": "gpt", "value": "[C][C][Branch1][C][C][N][C][=Branch1][C][=O][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}]