norethisterone hexanoate

17-hexanoyloxy-19-nor-17βH-pregn-4-en-20-yn-3-one;
Hexanoic acid (8R,9S,10R,13S,14S,17R)-17-ethynyl-13-methyl-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl ester;
17-Hexanoyloxy-19-nor-17βH-pregn-4-en-20-in-3-on;