5-(3-hydroxy-2-hydroxymethylpropionamido)-N,N'-dimethyl-N,N'-bis(2,3-dihydroxypropyl)-2,4,6-triiodoisophthalamide
N,N'-Bis(2,3-dihydroxypropyl)-5-(2-(hydroxymethyl)hydracrylamido)-2,4,6-triiodo-N,N'-dimethylisophthalamide