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system
Name the molecular formula for the molecule established as 6-methyl-2-oxo-N-[(5-phenyl-1H-pyrazol-4-yl)methyl]-4-pyridin-3-yl-3,4-dihydro-1H-pyrimidine-5-carboxamide using the IUPAC nomenclature.
user
C21H20N6O2
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