3β-acetoxy-2'-methyl-(5α,16β)-pregn-9(11)-eno[17,16-d]oxazol-20-one

11β-hydroxy-2'-methyl-(5α,16β)-pregnano[17,16-d]oxazole-3,20-dione

2'-methyl-(16β)-pregna-1,4,9(11)-trieno[17,16-d]oxazole-3,20-dione

2'-methyl-(5α,16β)-pregn-9(11)-eno[17,16-d]oxazole-3,20-dione