1 RWJ Cyclopentanecarboxylic acid [1-(benzothiazole-2-carbonyl)-4-guanidino-butyl]-amide 1.000 2 ABB (2s,4r)-1-acetyl-N-[(1s)-4-[(aminoiminomethyl)amino]-1-(2-benzothiazolylcarbonyl)butyl]-4-hydroxy-2-pyrrolidinecarboxamide 0.812