73554-84-4 EINECS 277-536-9 N-(tert-Butoxycarbonyl)-L-valyl-L-leucyl-N-(4-methyl-2-oxo-2H-1-benzopyran-7-yl)-L-lysinamide tertiary-Butyloxycarbonylvalyl-leucyl-lysinyl-4-methylcoumarin-7-amide