[{"from": "human", "value": "What can you tell me about this molecule? [C][C@][Branch2][Branch1][#C][C][=C][Branch1][#Branch2][C][=Branch1][=Branch1][=C][C][=C][Ring1][=Branch1][O][C][=Branch1][C][=O][C][=C][Ring1][N][C@@H1][Branch2][Ring2][Branch1][C@H1][C@@H1][Branch2][Ring1][O][C][=Branch1][C][=O][C][=Branch1][#C][=C][Branch1][O][C@][Ring1][#Branch1][Branch1][Branch1][C][Ring1][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 5a,11a-dehydrooxytetracycline; major species at pH 7.3. It is a tautomer of a 5a,11a-dehydrooxytetracycline."}]