(5alpha,11beta,17alpha)-11-[4-(Dimethylamino)phenyl]-5,17-dihydroxy-19-norpregn-9-en-20-yn-3-one cyclic 1,2-ethanediyl acetal

This compound is a complex polycyclic steroid derivative containing multiple functional groups, including alcohol, amine, and ether moieties, with a spiro-dioxolane ring system. Its structure features a dimethylaminophenyl substituent and an ethynyl group, and it possesses numerous undefined stereocenters, which complicates conformer generation.