[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is an L-alpha-amino acid zwitterion obtained from L-2-aminopentanoic acid by transfer of a proton from the carboxy group to the amino group. It is the major species at pH 7.3. It has a role as a bacterial metabolite. It is a tautomer of a L-2-aminopentanoic acid."}, {"from": "gpt", "value": "[C][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}]