Bz-Dab(nbd)-ala-trp-phe-pro-pro-nle-NH2

N-alpha-benzoyl-(gamma-(7-nitrobenz-2-oxa-1,3-diazol-4-yl)-2,4-diaminobutyryl)-alanyl-tryptophyl-phenylalanyl-prolyl-prolyl-norleucinamide