[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][=Branch1][C][=O][N][C][C@@H1][C@H1][Branch2][Branch1][O][C@@H1][Branch2][Branch1][=Branch1][C@H1][Branch2][Ring2][P][C@H1][Branch1][Ring2][O][Ring1][=Branch1][O][C@@H1][C@H1][Branch2][Ring2][Ring2][C][C@H1][Branch2][Ring1][=C][C@@H1][Branch1][Branch1][C@H1][Ring1][=Branch1][O][O][C@@H1][C@@H1][Branch1][P][C@H1][Branch1][=N][C@@H1][Branch1][=Branch2][C@H1][Branch1][Ring2][O][Ring1][=Branch1][C][O][O][NH3+1][O][NH3+1][NH3+1][NH3+1][O][O]"}, {"from": "gpt", "value": "The molecule is a quadruply-charged ammonium ion arising from protonation of the four free amino groups of N(6')-acetylkanamycin; major species at pH 7.3. It is an organic cation and an ammonium ion derivative. It is a conjugate acid of a N(6')-acetylkanamycin B."}]