You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(1-methyl-2-oxoquinolin-3-yl)methyl]-4-(5-methyl-1H-pyrazol-4-yl)piperidine-1-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H25N5O2
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