[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C@][C][C][C@H1][C@H1][Branch1][#Branch2][C@@H1][Ring1][=Branch1][C][C][C@@H1][Ring1][=Branch2][O][C][C][C][=C][Branch1][=N][C][=Branch1][C][=O][C][C][C@][Ring1][S][Ring1][#Branch1][C][O]"}, {"from": "gpt", "value": "The molecule is testosterone substituted with a hydroxy group on the fourth carbon atom. It is an anabolic steroid with no therapeutic indications, which is prohibited from use in sports by the World Anti-Doping Agency.  Formestane (Lentaron) acts as a prohormone of 4-Hydroxytestosterone, as 4-Hydroxytestosterone is one of the many byproducts of formestane metabolism. It is specifically the 17-hydroxylated analog to formestane. Like formestane, 4-hydroxytesterone has been patented for use in decreasing estrogen production in the body, but no such indication currently exists. 4-Hydroxytestosterone was first patented in 1955 by G.D Searle & Company."}]