IUPAC: (1S,3aS,3bR,9aR,9bS,11aS)-1-[(1,2-13C2)ethynyl]-1-hydroxy-11a-methyl-1H,2H,3H,3aH,3bH,4H,5H,7H,8H,9H,9aH,9bH,10H,11H,11aH-cyclopenta[a]phenanthren-7-one
IUPAC: (1S,3aS,3bR,9aR,9bS,11aS)-1-[(1,2-13C2)ethynyl]-1-hydroxy-11a-methyl-1H,2H,3H,3aH,3bH,4H,5H,7H,8H,9H,9aH,9bH,10H,11H,11aH-cyclopenta[a]phenanthren-7-one
SMILES: C[C@]12CC[C@H]3[C@@H](CCC4=CC(=O)CC[C@H]34)[C@@H]1CC[C@@]2(O)[13C]#[13CH]
SMILES: C[C@]12CC[C@H]3[C@@H](CCC4=CC(=O)CC[C@H]34)[C@@H]1CC[C@@]2(O)[13C]#[13CH]