1 6E9 N-(3-methoxyphenyl)-N-methyl-2,3-dioxo-1,2,3,4-tetrahydroquinoxaline-6-sulfonamide 1.000 2 NRS N-methyl-N-(naphthalen-2-yl)-2,3-dioxo-1,2,3,4-tetrahydroquinoxaline-6-sulfonamide 0.793