[{"from": "human", "value": "What can you tell me about this molecule? [C][C][O][C][=N][C][=C][C][=C][C][=Branch2][Ring1][P][=C][Ring1][=Branch1][N][Ring1][=Branch2][C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=N][N][=N][N-1][Ring1][Branch1][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a monocarboxylic acid anion resulting from the deprotonation of the tetrazole NH group and carboxy group of candesartan. It is the major species at pH 7.3. It is a conjugate base of a candesartan."}]