29973-05-5 BRN 2957277 Benzeneacetic acid, alpha-(((4-(((carboxymethyl)amino)carbonyl)-2,3,5,6-tetraiodobenzoyl)amino)methyl)- beta-(4-(Carboxymethyl-carbamoyl)-2,3,5,6-trijod-benzoyl)amino-alpha-phenyl-propionsaure