You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-(2-hydroxyethoxy)ethyl]-4-[hydroxy-(4-nitrophenyl)methylidene]-5-(2-methoxyphenyl)pyrrolidine-2,3-dione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H22N2O8
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