1	FHF	N-((2r,4s)-2-butyl-4-(3-(2-fluorophenyl)ureido)-5-methyl-3-oxohexyl)-N-hydroxyformamide	1.000
2	UHF	N-((2r,4s)-2-butyl-5-methyl-4-(3-(5-methylpyridin-2-yl)ureido)-3-oxohexyl)-N-hydroxyformamide	0.862