CAS No 139096-04-1 , Hydrogen [N-[2-[[2-[bis(carboxymethyl)amino]ethyl](carboxymethyl)amino]ethyl]-N-(carboxymethyl)glycyl-D-phenylalanyl-L-cysteinyl-L-phenylalanyl-D-tryptophyl-L-lysyl-L-threonyl-N1-[2(R)-hydroxy-1(R)-(hydroxymethyl)propyl]-L-cysteinamide cyclic (3--8)-disul