1H-Cyclodec(e)indene-6,9-dione, 3-acetyl-11,12-didehydro-2,3,3a,4,5,5a,7,8,10,13,13a,13b-dodecahydro-3a-methyl-, (3S-(3R*,3aS*,5aR*,13aR*,13bR*))- 5,10-Seco-19-norpregn-5-yne-3,10,20-trione 55512-68-0 Pregnyne