1 BD9 N-undecanoyl-L-histidyl-L-histidyl-N-methyl-N-(2-pyridin-2-ylethyl)-L-tyrosinamide 1.000 2 BD8 N-undecanoyl-L-histidyl-L-phenylalanyl-N-methyl-N-(2-pyridin-2-ylethyl)-L-tyrosinamide 0.879