[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is a Radioactive Diagnostic Agent. The mechanism of action of technetium tc-99m medronate is as a Radiopharmaceutical Activity."}, {"from": "gpt", "value": "[C][Branch1][=Branch2][P][=Branch1][C][=O][Branch1][C][O-1][O-1][P][=Branch1][C][=O][Branch1][C][O-1][O-1].[O].[O].[99Tc]"}]