L-Argininamide, L-seryl-L-leucyl-2-methylalanyl-L-asparaginyl-L-tryptophyl-L-phenylalanyl-L -a-aspartyl-L-isoleucyl-L-threonyl-L-asparaginyl-2-methylalanyl-L-leucyl-L- tryptophyl-L-arginyl-