5-Benzyl-6-hydroxy-2,3-dimethyl-1,4-dioxo-2,3,4,5-tetrahydro {-1H-pyrrolo[3,4-c]pyridine} 5-Benzyl-6-hydroxy-2,3-dimethyl-3,5-dihydro-1H-pyrrolo[3,4-c]pyridine-1,4(2H)-dione AIDS-139757 AIDS139757 NSC649763