1 KAF N-{(5s)-4,4-dihydroxy-6-phenyl-5-[(phenylcarbonyl)amino]hexanoyl}-L-phenylalanine 1.000 2 KAW N-{(5s)-4,4-dihydroxy-6-phenyl-5-[(phenylcarbonyl)amino]hexanoyl}-L-tryptophan 0.875