[{"from": "human", "value": "Please give me some details about this molecule. [C][=C][C][=Branch1][C][=O][C][=Branch1][C][=O][C][=C][Ring1][Branch2][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}, {"from": "gpt", "value": "The molecule is zwitterionic form of L-dopaquinone arising from transfer of a proton from the carboxy to the amino group; major species at pH 7.3. It is a tautomer of a L-dopaquinone."}]