[{"from": "human", "value": "Describe this molecule. [C][C@@H1][C][C@][Branch2][Ring2][=Branch2][C][=Branch1][=Branch1][=C][C][Ring1][=Branch1][=O][C][C][C@@H1][C@@][Ring1][=Branch2][Branch2][Ring1][#Branch1][C][=Branch1][C][=O][C][C@][Branch1][=C][C@H1][Ring1][#Branch1][C][C][C@@H1][Ring1][Branch1][C][=Branch1][C][=O][C][C][F][C]"}, {"from": "gpt", "value": "The molecule is a fluorinated steroid that is pregn-4-ene substituted by a fluoro group at position 2, a methyl group at position 2 and oxo groups at positions 3, 11 and 20. It is a 3-oxo-Delta(4) steroid, an 11-oxo steroid, a 20-oxo steroid and a fluorinated steroid. It is functionally related to a progesterone. It derives from a hydride of a pregnane."}]