[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C@@][Branch2][Branch1][S][C@H1][C@@H1][Branch2][Branch1][#Branch2][C@H1][C@@H1][Branch2][Ring2][S][C][=Branch1][C][=O][C][=Branch2][Ring2][Ring1][=C][Branch2][Ring1][=C][C@][Ring1][#Branch1][Branch2][Ring1][#Branch1][C][=Branch1][C][=O][C][Ring1][N][=C][Branch1][N][C][=C][Ring1][S][C][=C][C][=C][Ring1][=Branch1][O][O][O][O-1][C][=Branch1][C][=O][N][NH1+1][Branch1][C][C][C][O][O]"}, {"from": "gpt", "value": "The molecule is a zwitterion obtained by transfer of a proton from the 2-hydroxy group to the adjacent tertiary amino group of oxytetracycline; major species at pH 7.3. It is a zwitterion and an a tetracycline zwitterion. It is a tautomer of an oxytetracycline."}]