[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][C][C][C][P][Branch1][=Branch1][C][C][O][C][C][C][C][P][Branch1][=Branch1][C][C][O][C][C][C][C][O][C][C].[C][C][O][C][C][P][Branch1][=Branch1][C][C][O][C][C][C][C][P][Branch1][=Branch1][C][C][O][C][C][C][C][O][C][C].[O][=99Tc][=O]"}, {"from": "gpt", "value": "The molecule is a Radioactive Diagnostic Agent. The mechanism of action of technetium tc-99m tetrofosmin is as a Radiopharmaceutical Activity."}]