IUPAC: (1R,3aS,3bR,5aS,9aS,9bR,11aS)-11a-ethyl-1-ethynyl-1-hydroxy-hexadecahydro-1H-cyclopenta[a]phenanthren-7-one

SMILES: [H][C@@]12CC[C@@](O)(C#C)[C@@]1(CC)CC[C@@]1([H])[C@@]2([H])CC[C@@]2([H])CC(=O)CC[C@]12[H]