You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 2-[[2-(1-cyclopropylethyl)pyrazol-3-yl]carbamoylamino]-N-(thiophen-2-ylmethyl)butanamide by IUPAC nomenclature, provide its molecular formula.
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C18H25N5O2S
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