You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (2R)-N-[[2-[methyl(2-pyridin-2-ylethyl)amino]pyridin-3-yl]methyl]-2-(1,2,4-triazol-1-yl)propanamide into its molecular formula.
user
C19H23N7O
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