[5,8-BS(carboxymethyl)-11-[2-(methylamino)-2-oxoethyl]-3-oxo-2,5,8,11-tetraazatridecan-13-oato(3-)]-CalciateSodium; [5,8-BS[(carboxy-?O)methyl]-11-[2-(methylamino)-2-oxoethyl]-3-oxo-2,5,8,11-tetraazatridecan-13-oato(3-)-?N5,?N8,?N11,?O13]-calciateSodium; 5,8-BS(carboxymethyl)-11-[2-(methylamino)-2-oxoethyl]-3-oxo-2,5,8,11-tetraazatridecan-13-oic Acid Calcium Complex