The molecule is a steroid ester that is the O-succinoyl derivative of 11alpha-hydroxyprogesterone. It is a 20-oxo steroid, a dicarboxylic acid monoester, a steroid ester, a 3-oxo-Delta(4) steroid and a hemisuccinate. It derives from a succinic acid and an 11alpha-hydroxyprogesterone.
4-[[(8S,9S,10R,11R,13S,14S,17S)-17-acetyl-10,13-dimethyl-3-oxo-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-11-yl]oxy]-4-oxobutanoic acid