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 3-[4-[[(2R)-2-[1-(3,5-dimethyl-1H-pyrazol-4-yl)ethyl]pyrrolidin-1-yl]methyl]phenyl]-N-hydroxyprop-2-enamide is given. What is its corresponding molecular formula?
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C21H28N4O2
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