You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (3R,4S)-1-(2-cyclopropylfuran-3-carbonyl)-N-methyl-4-(1-methylpyrazol-4-yl)pyrrolidine-3-carboxamide into molecular formula.
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C18H22N4O3
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