[{"from": "human", "value": "Describe this molecule. [C][Branch1][Ring1][C][NH3+1][C][Branch1][O][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1][Cl]"}, {"from": "gpt", "value": "The molecule is an alpha-amino-acid cation that is the conjugate acid of 4-chloro-L-lysine zwitterion; major species at pH 7.3. It is a conjugate acid of a 4-chloro-L-lysine zwitterion."}]