N1-(1,3-dihydroxypropan-2-yl)-N3-(2,3-dihydroxypropyl)-5-((S)-2-hydroxypropanamido)-2,4,6-triiodoisophthalamide;N1-?(2,?3-?Dihydroxypropyl)?-?N3-?[2-?hydroxy-?1-?(hydroxymethyl)?ethyl]?-?5-?[[(2S)?-?2-?hydroxy-?1-?oxopropyl]?amino]?-?2,?4,?6-?triiodoisophthalamide(Iopamidol EP Impurity G)
