H-D-Phe-Cys-Tyr-D-Trp-Orn-Thr-Pen-Thr-NH2

L-Threoninamide,D-phenylalanyl-L-cysteinyl-L-tyrosyl-D-tryptophyl-L-ornithyl-L-threonyl-3-mercapto-L-valyl-,cyclic (2®7)-disulfide