5a,7a-Dimethyl-4,5,5a,6,7,7a,8,10,11,11a,11b,12,13,13a-tetradecahydro[1,2,5]oxadiazolo[3',4':5,6]naphtho[2,1-f]quinolin-9(5bH)-one AIDS-160469 AIDS160469 NSC631063 NSC631064 {17-Aza-D-homo-5.beta.-androstano[3,4-c]-1',2',5'-} oxadiazole-17-one {17a-Aza-D-homo-5-.alpha.-androstano[3,4-c]-1',2',5'-} oxadiazole-17-one