[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=C][C][=C][Branch1][=Branch1][C][=C][Ring1][=Branch1][Cl][N][C][=C][Ring1][Branch2][C][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}, {"from": "gpt", "value": "The molecule is an alpha-amino acid zwitterion resulting from the transfer of a proton from the carboxy group to the alpha-amino group of 6-chloro-D-tryptophan; major species at pH 7.3. It is a tautomer of a 6-chloro-D-tryptophan."}]