5a,7a-Dimethyl-5,5a,5b,6,7,7a,10,10a,10b,11,12,12a-dodecahydro-4H-cyclopenta[7,8]phenanthro[1,2-c][1,2,5]oxadiazole-8,9-dione 9-oxime AIDS-133943 AIDS133943 NSC631059 {16-Oximino-17-oxo-5-.beta.-androstano[3,4-c]-1',2',5'-} oxadiazole