[{"from": "human", "value": "Please give me some details about this molecule. [C][=C][C][=Branch1][S][=C][Branch1][Branch2][C][=C][Ring1][=Branch1][C][C][NH3+1][N+1][=Branch1][C][=O][O-1][O-1]"}, {"from": "gpt", "value": "The molecule is a zwitterion obtained by transfer of a proton from the phenol to the amino group of 3-nitrotyramine; major species at pH 7.3 It is a tautomer of a 3-nitrotyramine."}]