[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=C][C][=Branch1][=Branch2][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][O][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}, {"from": "gpt", "value": "The molecule is an L-alpha-amino acid zwitterion that is L-m-tyrosine in which a proton has been transferred from the carboxy group to the amino group. It is a tautomer of a L-m-tyrosine."}]