L-Methioninamide, N-[[trans-4-[[[[4,7,10-tris(carboxymethyl)-1,4,7,10-tetraazacyclododec-1 -yl]acetyl]amino]methyl]cyclohexyl]carbonyl]-D-phenylalanyl-L-glutaminyl-L -tryptophyl-L-alanyl-L-valylgly