127819-97-0 Cyclo(3-(2-naphthalenyl)-D-alanyl-L-isoleucyl-D-2-piperidinecarbonyl-L-2-piperidinecarbonyl-D-histidyl-L-prolyl) Cyclo(pro-nal-ile-pip-pip-his) Cyclo(prolyl-naphthylalanyl-isoleucyl-pipecolyl-pipecolyl-histidyl) L 366,948 L 366948 L-366948