You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-cyclopentyl-3-[[N-[2-(furan-2-yl)-2-piperidin-1-ylethyl]-N'-methylcarbamimidoyl]amino]propanamide into molecular formula.
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C21H35N5O2
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