[{"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][C][=Branch1][C][=O][C][C][C@][Ring1][S][Ring1][#Branch1][C]"}, {"from": "gpt", "value": "The molecule is an androstanoid that is the C-17 epimer of testosterone. It has a role as an androgen antagonist and a human metabolite. It is an androstanoid, a 17alpha-hydroxy steroid and a 3-oxo-Delta(4) steroid."}]