L-Isoleucine, L-asparaginyl-L-tyrosyl-L-a-aspartyl-L-tyrosyl-L-cysteinyl-L-isoleucyl-L-prol yl-L-tyrosyl-L-asparaginyl-L-seryl-L-valyl-L-threonyl-L-a-aspartyl-L-threonyl-