(8R,9S,10R,13S,14S,17S)-3'-isopropyl-10,13-dimethyl-1,6,7,8,9,10,11,12,13,14,15,16-dodecahydrospiro[cyclopenta[a]phenanthrene-17,5'-oxazolidine]-2',3(2H)-dione

3β-hydroxy-3'-isopropyl-(17βO)-spiro[androst-5-ene-17,5'-oxazolidin]-2'-one

3-Oxo-androsta-1,4,6-triene-17S-spiro-5'-(2'-oxo-3'-methyl)oxazolidine

3β-ethoxycarbonyloxy-3'-methyl-(17βO)-spiro[androst-5-ene-17,5'-oxazolidin]-2'-one

17-(Methoxymethyl)-androst-5-en-3β,17β-diol