20,20-ethanediyldioxy-11β,17,21-trihydroxy-19-nor-pregn-4-en-3-one
16α,17α-epoxy-17-acetyl-Δ1,3,5(10)-estratriene
11β-acetoxy-20,20-ethanediyldioxy-3-methoxy-19-nor-pregna-1,3,5(10)-triene-17,21-diol
20,20-ethanediyldioxy-3-methoxy-19-nor-pregna-1,3,5(10)-triene-11β,17,21-triol
20,20-ethanediyldioxy-11β,17,21-trihydroxy-19-nor-pregn-5(10)-en-3-one