[{"from": "human", "value": "Provide a description of this molecule. [C][N+1][Branch1][C][C][Branch1][C][C][C][C][O][P][=Branch1][C][=O][Branch1][C][O-1][O][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][131I]"}, {"from": "gpt", "value": "The molecule is a radioconjugate composed of iopofosine, a phospholipid ether analog, labeled with the radioactive isotope iodine I 131, with potential antineoplastic activity. Upon administration, iodine I 131 iopofosine selectively accumulates in and retains within tumor cells for a prolonged period of time due to the decreased activity of a phospholipase D (PLD) in tumor cells compared to normal cells, thereby delivering cytotoxic radiation specifically to tumor cells.  PLD is an enzyme found in the cell membrane of normal cells that degrades phospholipids."}]