Task: Please answer the following question about the molecule with SMILES C[C@H](O)C(=O)[C@@]1(C)CC[C@H]2[C@@H]3CCC4=CC(=O)CCC4=C3CC[C@@]21C.
Description: What is the definition of this compound's USAN stem?
Answer: progestins
Task: Please answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
C[C@H](O)C(=O)[C@@]1(C)CC[C@H]2[C@@H]3CCC4=CC(=O)CCC4=C3CC[C@@]21C
C[C@H](O)C(=O)[C@@]1(C)CC[C@H]2[C@@H]3CCC4=CC(=O)CCC4=C3CC[C@@]21C
(8S,13S,14S,17S)-17-[(2S)-2-hydroxypropanoyl]-13,17-dimethyl-1,2,6,7,8,11,12,14,15,16-decahydrocyclopenta[a]phenanthren-3-one
What is the definition of this compound's USAN stem?
progestins