[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a C21-steroid hormone that is 5alpha-pregnane substituted by oxo groups at positions 3 and 20. It is a metabolite of progestrone. It has a role as a human metabolite and a progestogen. It is a 20-oxo steroid, a C21-steroid hormone and a 3-oxo-5alpha-steroid. It is functionally related to a progesterone. It derives from a hydride of a 5alpha-pregnane."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][C@H1][C][C][C@@H1][C@@][Ring1][Branch1][Branch2][Ring1][=Branch2][C][C][C@H1][C@H1][Ring1][=Branch1][C][C][C@@H1][C@@][Ring1][=Branch1][Branch1][#Branch2][C][C][C][=Branch1][C][=O][C][Ring1][#Branch1][C][C]"}]