[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][Branch1][Ring2][C][C][NH3+1][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][N][C][=Branch1][C][=O][C][NH3+1]"}, {"from": "gpt", "value": "The molecule is a peptide cation obtained by deprotonation of the carboxy terminus and protonation of the side-chain amino group and the amino terminus of Gly-Lys; major species at pH 7.3. It is a conjugate acid of a member of Gly-Lys."}]