L-Alanine, L-alanyl-L-a-aspartyl-L-tyrosyl-L-tyrosyl-L-cysteinyl-L-seryl-L-alanyl-L-tyrosyl -L-a-aspartyl-L-seryl-L-asparaginyl-L-leucyl-L-serylglycyl-L-valyl-L-leucyl-L- phenylalanylglycyl-L-seryl