You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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3-(2,6-dimethylmorpholin-4-yl)-1-[(2-fluorophenyl)methyl]-4-(4-nitrophenyl)pyrrole-2,5-dione is the IUPAC name of a molecule. Please give its molecular formula.
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C23H22FN3O5
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