You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 1-(1,1-dioxothiolan-3-yl)-3-(furan-2-ylmethyl)-2-[(4-nitrophenyl)methyl]guanidine by IUPAC nomenclature, provide its molecular formula.
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C17H20N4O5S
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