(4S)-4-(4-ththoxylmethyl)-3,6,9-tris(carboxylatomethyl)-3,6,9-triazaundecanedoic acid, gadolinium complex, disodium salt
gadolinium (4S)-4-(4-ethoxybenzyl)-3,6,9-tris(carboxylatomethyl)-3,6,9-triazaundecanoic acid disodium salt