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system
Provide the molecular formula for the IUPAC named substance (E)-N-[3-(3-oxo-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyridin-2-yl)propyl]-3-pyridin-3-ylprop-2-enamide .
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C17H21N5O2
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