[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C@H1][Branch2][Ring1][#C][C@H1][Branch2][Ring1][#Branch2][C@H1][C@@H1][Branch2][Ring1][Ring2][C@H1][Branch1][S][C][C@][Branch1][Ring2][O][Ring1][=Branch1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][O][O][NH3+1][NH3+1][O]"}, {"from": "gpt", "value": "The molecule is an organic cation that is the conjugate acid of legionaminic acid obtained by protonation of both amino groups and deprotonation of the carboxy group; major species at pH 7.3. It is an organic cation and an ammonium ion derivative. It is a conjugate acid of a legionaminic acid."}]