You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 5-ethyl-N-[(3S,4R)-4-hydroxyoxolan-3-yl]-1-(3-methylbutyl)pyrazole-4-carboxamide is given. What is its corresponding molecular formula?
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C15H25N3O3
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