2-(2-(3-(3-(tert-butyl)ureido)-5-chloro-6-methyl-2-oxopyrazin-1(2H)-yl)-2-phenylacetamido)-N-((4-(trifluoromethyl)phenyl)sulfonyl)benzamide
methyl 2-(3-(3-(tert-butyl)ureido)-5-chloro-6-methyl-2-oxopyrazin-1(2H)-yl)-2-phenylacetate
2-(3,5-dichloro-6-methyl-2-oxopyrazin-1(2H)-yl)-2-phenylacetic acid methyl ester