You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(1-ethylpyrrolidin-3-yl)methyl]-8-methyl-[1,2,4]triazolo[1,5-a]pyridin-2-amine is the IUPAC name of a molecule. Please give its molecular formula.
user
C14H21N5
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