Synonyms: 5'bH-Pregna-1,4,9(11)-trieno[17,16-d]oxazole-3,20-dione,21-hydroxy-2'-methyl-, acetate (ester) (8CI);2H-Naphth[2',1':4,5]indeno[1,2-d]oxazole,5'H-pregna-1,4,9(11)-trieno[17,16-d]oxazole deriv.;21-Hydroxy-3-oxo-1,4,9(11)-pregnatrieno[17a,16a-d]-2'-methyloxazoline acetate