L-Threonine, L-seryl-L-leucylglycyl-L-a-glutamyl-L-alanyl-L-cysteinyl-L-lysyl-L-lysyl-L-valyl- L-phenylalanyl-L-leucyl-L-a-aspartyl-L-cysteinyl-L-cysteinyl-L-asparaginyl-L -tyrosyl-L-isoleucyl-