[{"from": "human", "value": "Describe this molecule. [C][C][C][=Branch1][C][=O][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]"}, {"from": "gpt", "value": "The molecule is an androstanoid that is (5alpha)-androst-1-en-17beta-yl propanoate substituted by an oxo group at position 3. It is a steroid ester, a 3-oxo-Delta(1) steroid and an androstanoid. It derives from a hydride of a 5alpha-androstane."}]