[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a radioconjugate of synthetic active thyroid hormone, liothyronine (T3), labeled with Iodine 131. Liothyronine involves many important metabolic functions and is essential to the proper development and differentiation of all cells. I131 liothyronine may be used in radiotherapy in thyroid cancers."}, {"from": "gpt", "value": "[C][=C][C][=Branch2][Ring2][Ring2][=C][Branch2][Ring1][#C][C][=C][Ring1][=Branch1][O][C][=C][Branch2][Ring1][Ring2][C][=C][Branch1][=Branch1][C][=C][Ring1][=Branch1][131I][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][131I][131I][O]"}]