DMP 728 [ DMP-728,DMP728,XL 118,XL-118,XL118,cyclic(D-2-aminobutyryl-N(2)-methyl-L-arginylglycyl-L-aspartyl-3-(aminomethyl)benzoic acid),cyclic(D-2-aminobutyryl-N-2-methyl-L-arginyl-glycyl-L-aspartyl-3-aminomethylbenzoic acid)methanesulfonic acid salt ] structure in first source; RN given refers to the monomethane sulfate