You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (3R)-3-[4-(furan-2-carbonyl)piperazin-1-ium-1-yl]-1-(4-propoxyphenyl)pyrrolidine-2,5-dione is given. What is its corresponding molecular formula?
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C22H26N3O5+
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