91269-93-1 D-Leucine, N-(N-(N-(N-(1-(N-L-valyl-D-leucyl)-L-prolyl)-L-phenylalanyl)-L-phenylalanyl)-L-valyl)-, (E)- Val-leu-pro-phe-phe-val-leu Valyl-leucyl-prolyl-phenylalanyl-phenylalanyl-valyl-leucine