1-Deoxy-1-(methylamino)-D-glucitol, 3,3'-(1,4-butanediylbis(oxy(2-hydroxy-3,1-propanediyl)(acetylimino)))bis(5-(acetylmethylamino)-2,4,6-triiodobenzoate) (2:1) (salt) 30804-68-3 Dimer bjoerk Meglumine iozomate Ph DZ 59B