[{"from": "human", "value": "Describe this molecule. [C][Branch1][Ring2][C][O][N][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}, {"from": "gpt", "value": "The molecule is an amino acid zwitterion arising from transfer of a proton from the carboxy to the amino group of L-canaline; major species at pH 7.3. It is functionally related to a L-homoserine zwitterion. It is a tautomer of a L-canaline."}]