[{"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][=Branch1][C][=O][C][=Branch2][Ring1][#Branch1][=C][Branch1][#C][C][=Branch1][C][=O][C@][Ring1][Branch2][Branch1][Branch1][C][Ring1][N][=O][O][C][=Branch1][C][=O][N][O-1][O][O]"}, {"from": "gpt", "value": "The molecule is an organic anion that is the conjugate base of 4-dedimethylamino-4-oxoanhydrotetracycline, obtained by deprotonation of the 2-hydroxy group. It is the major microspecies at pH 7.3 (according to Marvin v 6.2.0.). It is a conjugate base of a 4-de(dimethylamino)-4-oxoanhydrotetracycline."}]