122211-31-8 Cyclo(L-isoleucyl-D-hexahydro-3-pyridazinecarbonyl-L-hexahydro-3-pyridazinecarbonyl-N-methyl-D-phenylalanyl-L-prolyl-D-phenylalanyl) Cyclo(ile-hexahydro-3-pyridazinecarbonyl-hexahydro-3-pyridazinecarbonyl-N-Me-phe-pro-phe) L 364,918 L 364918 L-364918