You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[2-(3,5-dimethyl-1H-pyrazol-4-yl)ethyl]-2-[(3-methoxyphenyl)methylamino]-1H-pyrimidin-6-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H23N5O2
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