[{"from": "human", "value": "What can you tell me about this molecule? [C][Branch2][Ring1][Branch2][C][C][Branch1][C][O][Branch1][=Branch2][P][=Branch1][C][=O][Branch1][C][O][O][P][=Branch1][C][=O][Branch1][C][O][O-1][C][N]"}, {"from": "gpt", "value": "The molecule is an organic anion. It is a conjugate base of an alendronic acid."}]