You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(2,3-dihydroxypropyl)-3-[1-(2,3-dihydroxypropylamino)ethyl]-5-[(2-hydroxyacetyl)-(2-hydroxyethyl)amino]-2,4,6-triiodobenzamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H28I3N3O8
assistant