Chemical Name: (2Z,5S,8R,9S,10S,13S,14S,17S)-17-hydroxy-2-(hydroxymethylidene)-10,13,17-trimethyl-1,4,5,6,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one
Synonym: Anapolon,Anasteron,Nastenon
Smile: O=C1/C(C[C@]2(C)[C@@]3([H])CC[C@]4(C)[C@](O)(C)CC[C@@]4([H])[C@]3([H])CC[C@@]2([H])C1)=C\O