[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][=Branch1][C][=O][N][C@@H1][Branch1][=Branch1][C][C][C][C][NH3+1][C][=Branch1][C][=O][O][C]"}, {"from": "gpt", "value": "The molecule is an organic cation that is the conjugate acid of N(alpha)-acetyl-L-lysine methyl ester, obtained by protonation of the side-chain amino group; major species at pH 7.3. It is an ammonium ion derivative and an organic cation. It is functionally related to a L-lysinium(1+). It is a conjugate acid of a N(alpha)-acetyl-L-lysine methyl ester."}]