You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[4-(3H-imidazo[4,5-c]pyridin-2-yl)-3-prop-2-ynoxyphenoxy]acetonitrile by IUPAC nomenclature, provide its molecular formula.
user
C17H12N4O2
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