D-PHE-CYS-TYR-D-TRP-ORN-THR-PEN-THR-NH2
phenylalanyl-cyclo(cysteinyltyrosyl-tryptophyl-ornithyl-threonyl-penicillamine);threoninamide;NALTRIBEN;NTB;D-PHE-CYS-TYR-D-TRP-ORN-THR-PEN-THR AMIDE;D-PHE-CYS-TYR-D-TRP-ORN-THR-PEN-THR-NH2;DPHE-CYS-TYR-DTRP-ORN-THR-PEN-THR-OL;CTOP