L-Serine, L-a-glutamyl-L-leucyl-L-histidyl-L-arginylglycylglycylglycyl-L-arginyl-L-seryl- L-arginyl-L-threonyl-L-serylglycyl-L-seryl-L-prolylglycyl-L-cysteinyl-L-arginyl- L-asparaginyl-L-seryl-L-is