10a,12a-Dimethyl-6-oxo-2,3,3a,3b,4,5,5a,6,10,10a,10b,11,12,12a-tetradecahydro-1H-cyclopenta[7,8]phenanthro[3,2-d]isoxazol-1-yl acetate AIDS-132453 AIDS132453 NSC626411 {4-Oxo-5.alpha.-androstano[2,3-d]isoxazol-17.beta.-ol} acetate