[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C@H1][Branch1][Ring2][C][C][NH3+1][C@H1][Branch2][Ring1][Ring1][C][=Branch1][C][=O][N][C][C][C][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][NH3+1][NH3+1]"}, {"from": "gpt", "value": "The molecule is a peptide cation obtained by deprotonation of the carboxy group and protonation of the three amino groups of N(6)-[(3R)-3-methyl-D-ornithyl]-L-lysine; major species at pH 7.3. It is a conjugate acid of a N(6)-[(3R)-3-methyl-D-ornithyl]-L-lysine."}]