L-Proline, L-a-glutamyl-L-prolylglycyl-L-valyl-L-prolyl-L-arginyl-L-a-glutamyl-L-valyl-L-a -aspartyl-L-a-glutamyl-L-tyrosyl-L-cysteinyl-L-lysyl-L-isoleucylglycyl-L-argin yl-L-tyrosyl-L-asparaginyl-