[{"from": "human", "value": "Provide a description of this molecule. [C][C][=Branch2][Ring1][Branch2][=C][C][O][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1][C]"}, {"from": "gpt", "value": "The molecule is an amino acid zwitterion obtained by transfer of a proton from the amino to the carboxy group of 4-O-dimethylallyl-L-tyrosine; major species at pH 7.3. It is a tautomer of a 4-O-dimethylallyl-L-tyrosine."}]