3-(3-(Hydroxy(oxido)amino)phenyl)-5-(4-(4-(3-(3-(hydroxy(oxido)amino)phenyl)-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-136940 AIDS136940 NSC640237