You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 5-tert-butyl-N-[(1R)-1-[4-(diethylcarbamoylamino)phenyl]ethyl]-1H-pyrazole-3-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C21H31N5O2
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