1-De-L-alanine-3a-endo-L-phenylalaninecycloamanide A 144838-26-6 Cgppvpp Cyclo(gly-pro-phe-val-phe-phe) Cyclo(glycyl-prolyl-phenylalanyl-valyl-phenylalanyl-phenylalanyl) Cycloamanide A, 1-de-L-alanine-3a-endo-L-phenylalanine-