1 8XX (3~{R})-4-cyclopropyl-~{N},1,3-trimethyl-~{N}-(4-methylphenyl)-2-oxidanylidene-3~{H}-quinoxaline-6-carboxamide 1.000 2 8XR (3~{R})-4-cyclopentyl-~{N}-(2,4-dimethylphenyl)-1,3-dimethyl-2-oxidanylidene-3~{H}-quinoxaline-6-carboxamide 0.806