[{"from": "human", "value": "Please give me some details about this molecule. [C][O][C][=C][Branch1][N][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][C][NH3+1][O][S][=Branch1][C][=O][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a zwitterion obtained by transfer of a proton from the sulfate to the amino group of 3-methoxytyramine sulfate; major species at pH 7.3. It is a tautomer of a 3-methoxytyramine sulfate."}]