3-Oxopregn-4-ene-20-carboxaldehyde24254-01-130 % similar (2S)-2-((8S,9S,10R,13S,14S,17R)-10,13-Dimethyl-3-oxo-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta(a)phenanthren-17-yl)propanal3986-89-830 % similar 5,5-Dimethylpyrrolidin-2-one5165-28-630 % similar