[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is a 1,1-bis(phosphonic acid)."}, {"from": "gpt", "value": "[C][Branch2][Ring1][=N][C][Branch2][Ring1][Ring2][C][Branch1][=Branch2][P][=Branch1][C][=O][Branch1][C][O][O][P][=Branch1][C][=O][Branch1][C][O][O][C][=Branch1][C][=O][O][C][=Branch1][C][=O][O]"}]