[{"from": "human", "value": "Please give me some details about this molecule. [C][Branch1][P][C][N][Branch1][#Branch1][C][C][=Branch1][C][=O][O-1][C][C][=Branch1][C][=O][O-1][N][Branch2][Ring1][C][C][C][N][Branch1][#Branch1][C][C][=Branch1][C][=O][O-1][C][C][=Branch1][C][=O][O-1][C][C][=Branch1][C][=O][O-1].[99Tc+4]"}, {"from": "gpt", "value": "The molecule is a radiopharmaceutical core of chelating agent DTPA (diethylenetriaminepentaacetic acid) complexed with the gamma-emitting radionuclide technetium Tc 99m with radioimaging application. Tc-99m-DTPA has been utilized as a radiotracer, when conjugated to tissue specific molecules, in a wide variety of nuclear imaging studies, including brain, lung, and renal function studies."}]