[{"from": "human", "value": "What can you tell me about this molecule? [C][C][=C][C][=C][C][=C][Branch2][Ring2][=C][C][Ring1][=Branch1][=C][Branch2][Ring2][=Branch1][C][=C][Ring1][#Branch2][C][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][NH3+1][O][O]"}, {"from": "gpt", "value": "The molecule is a zwtterion obtained by transfer of a proton from the 2-hydroxy to the primary amino group of 4-amino-4-de(dimethylamino)anhydrotetracycline. It is the major microspecies at pH 7.3 (according to Marvin v 6.2.0.). It is a tautomer of a 4-amino-4-de(dimethylamino)anhydrotetracycline."}]