[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][=Branch1][C][=O][N][C][=C][Branch2][Ring1][#Branch2][C][=Branch1][P][=C][Branch1][=N][C][=Branch1][Branch1][=C][Ring1][=Branch1][I][C][=Branch1][C][=O][O][I][C][=Branch1][C][=O][N][C][I].[C][N][C][C@@H1][Branch1][#C][C@H1][Branch1][O][C@@H1][Branch1][#Branch1][C@@H1][Branch1][Ring1][C][O][O][O][O][O]"}, {"from": "gpt", "value": "The molecule is the meglumine salt form of iothalamate, an organic iodine compound and a radiographic contrast medium. Iothalamate meglumine blocks x-rays as they pass through the body, thereby allowing body structures not containing iodine to be visualized. The degree of opacity produced by iothalamate meglumine is directly proportional to the total amount of the iodinated contrast agent in the path of the x-rays. The visualization of body structures is dependent upon the distribution and elimination of iothalamate meglumine. (NCI05)"}]