[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][=Branch1][C][=O][N][C][C][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1]"}, {"from": "gpt", "value": "The molecule is an amino acid zwitterion obtained via transfer of a proton from the carboxy to the amino group of N(6)-acetyl-L-lysine; major species at pH 7.3. It is a tautomer of a N(6)-acetyl-L-lysine."}]