5-(N-2,3-dihydroxypropylacetamido)-2,4,6-triiodo-N-(2-hydroxyethyl)-N'-(2,3-dihydroxypropyl)isophthalamide
N-(2,3-dihydroxypropyl)-N'-(2- hydroxyethyl)-5-[N-(2,3-dihydroxypropyl) acetamido]-2,4,6-triiodoisophthal-amide