3-(4-Methoxyphenyl)-3a,4,5a,9a,11,11a-hexahydro[1,6]benzodioxocino[3,4-d]isoxazole 4-(3a,4,5a,9a,11,11a-Hexahydro[1,6]benzodioxocino[3,4-d]isoxazol-3-yl)phenyl methyl ether AIDS-134824 AIDS134824 NSC633848