[{"from": "human", "value": "Generate a molecule based on this description. The molecule is zwitterionic form of 5-amino-2-oxopentanoic acid. It is a tautomer of a 5-amino-2-oxopentanoic acid."}, {"from": "gpt", "value": "[C][Branch1][O][C][C][=Branch1][C][=O][C][=Branch1][C][=O][O-1][C][NH3+1]"}]