You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule N-(5-methyl-1H-pyrazol-3-yl)-6-[3-(1,2,3,6-tetrahydropyridin-4-yl)phenyl]pyridin-2-amine ?
user
C20H21N5
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