3-(2-Chlorophenyl)-5-(4-(4-(3-(2-chlorophenyl)-4,6-dioxo-2-phenylhexahydro-5H-pyrrolo[3,4-d]isoxazol-5-yl)benzyl)phenyl)-2-phenyldihydro-2H-pyrrolo[3,4-d]isoxazole-4,6(3H,5H)-dione AIDS-136959 AIDS136959 NSC640256