Lopamidol

Chemical Name: N,N′-Bis[2-hydroxy-1-(hydroxymethyl)ethyl]-5-[[(2S)-2-hydroxypropanoyl]amino]-2,4,6-triiodobenzene-1,3-dicarboxamide (as per EP) ; (S)-N,N′-Bis[2-hydroxy-1-(hydroxymethyl)ethyl]-2,4,6-triiodo-5-lactamidoisophthalamide (a sper USP)

Smile: O=C(NC(CO)CO)C1=C(C(C(NC(CO)CO)=O)=C(C(NC([C@@H](O)C)=O)=C1I)I)I