[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a 2-amino-4-oxopentanoic acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of (R)-2-amino-4-oxopentanoic acid; major microspecies at pH 7.3. It is a tautomer of a (R)-2-amino-4-oxopentanoic acid."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][C][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}]