You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named methyl 4-[(4R,5S)-5-[5-(2-nitrophenyl)furan-2-yl]-4-pyridin-2-yl-2-sulfanylideneimidazolidin-1-yl]butanoate by IUPAC nomenclature, provide its molecular formula.
user
C23H22N4O5S
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