[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C@@H1][Branch1][#Branch2][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1][O]"}, {"from": "gpt", "value": "The molecule is zwitterionic form of L-threo-3-phenylserine arising from transfer of a proton from the carboxy to the alpha-amino group; major species at pH 7.3. It is a tautomer of a L-threo-3-phenylserine."}]