Chemical Name: 17β-Hydroxy-17α-ethynylestr-4-en-3,6-dione
Synonym: (6S,7S)-N6-propyl-N7-((S)-6-(propylamino)-4,5,6,7-tetrahydrobenzo[d]thiazol-2-yl)-4,5,6,7-tetrahydrobenzo[d]thiazole-2,6,7-triamine
Smile: O[C@@]1(C#C)CC[C@@]2([H])[C@]3([H])CC(C4=CC(CC[C@]4([H])[C@@]3([H])CC[C@]12C)=O)=O