[{"from": "human", "value": "Provide a description of this molecule. [C][C][C][=Branch1][C][=O][C@][Branch2][Ring1][S][C][C][C@@H1][C@@][Ring1][Branch1][Branch2][Ring1][=Branch1][C][C][C][=C][C][C][C][=Branch1][C][=O][C][=C][Ring1][#Branch1][C][C][C@@H1][Ring1][#C][Ring1][O][C][C]"}, {"from": "gpt", "value": "The molecule is a progestin consisting of 17beta-propionylestra-4,9-dien-3-one substituted at position 17 by a methyl group. It has a role as a progestin, a progesterone receptor agonist and an antineoplastic agent. It is a 3-oxo-Delta(4) steroid and a 20-oxo steroid. It derives from a hydride of an estrane."}]