3-(2,4-Dichlorophenyl)-5-(4-(4-(3-(2,4-dichlorophenyl)-4,6-dioxo-3a,4,6,6a-tetrahydro-5H-pyrrolo[3,4-d]isoxazol-5-yl)benzyl)phenyl)-3aH-pyrrolo[3,4-d]isoxazole-4,6(5H,6aH)-dione AIDS-136942 AIDS136942 NSC640239