You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 2-hydroxyethyl 3-[2-(1,3-dioxoisoindol-2-yl)ethyl]-6-hydroxy-5-oxo-1H-cyclohepta[b]pyrrole-2-carboxylate .
user
C22H18N2O7
assistant