[{"from": "human", "value": "Provide a description of this molecule. [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][I][C][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][N][I][I][O]"}, {"from": "gpt", "value": "The molecule is a thyroidal hormone T3 which is normally produced by the thyroid gland in a ratio 4:1 when compared with T4: T3. Liothyronine is the active form of thyroxine which is composed in a basic chemical structure by a tyrosine with bound iodine. The exogenous liothyronine product was developed by King Pharmaceuticals and FDA approved in 1956."}]