[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][=C][C][=Branch1][#C][=C][C][=C][Ring1][=Branch1][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1][O]"}, {"from": "gpt", "value": "The molecule is a D-alpha-amino acid zwitterion that is D-4-hydroxyphenylglycine in which a proton has been transferred from the carboxy group to the amino group. It is the major species at pH 7.3. It has a role as a bacterial metabolite. It is a tautomer of a D-4-hydroxyphenylglycine."}]