[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][C][=Branch1][C][=N][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a dehydroamino acid that is 2-aminobutanoic acid in which the amino group has been oxidised to the corresponding imine. It is a dehydroamino acid, a ketimine and a monocarboxylic acid. It is a tautomer of a 2-iminobutanoic acid zwitterion, a 2-aminobut-2-enoic acid zwitterion and a 2-aminobut-2-enoic acid."}]