1 FRG 2-[3-methyl-4-(N-methyl-guanidino)-butyrylamino]-3-(4-phenylethynyl-phenyl)-propionic acid methyl ester 1.000 2 CMM 2-[2-(1-carbamimidoyl-piperidin-3-yl)-acetylamino]-3-{4-[2-(3-oxalyl-1h-indol-7-yl)ethyl]-phenyl}-propionic acid methyl ester 0.805