L-Argininamide,N-[[4,7,10-tris(carboxymethyl)-1,4,7,10-tetraazacyclododec-1-yl]acetyl]-L-threonyl-L-phenylalanyl-L-a-aspartyl-L-a-aspartyl-L-leucyl-L-phenylalanyl-L-tryptophyl-L-lysyl-L-a-glutamylglycyl-L-histidyl-