4-Methyl-2-((((4-methyl-1,3-dioxo-1,3,4,5,6,7-hexahydro-2H-isoindol-2-yl)methyl)thio)methyl)-4,5,6,7-tetrahydro-1H-isoindole-1,3(2H)-dione AIDS-126673 AIDS126673 NSC122361