2-[[2-[[2-[[2-[[2-[[2-[[2-amino-3-(4-hydroxyphenyl)propanoyl]amino]acetyl]amino]acetyl]amino]-3-phenylpropanoyl]amino]-4-methylpentanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-5-(diaminomethylideneamino)pentanoic acid; DYNORPHIN A (1-7); LEU-ENKEPHALIN-ARG-ARG; H-TYR-GLY-GLY-PHE-LEU-ARG-ARG-OH; DYNORPHIN A (1-7), PORCINE; YGGFLRR; TYR-GLY-GLY-PHE-LEU-ARG-ARG; dynorphin fragment 1-7 porcine; DYNORPHIN A, FRAGMENT 1-7