You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[6-[4-[2-(5-methyl-1,2-oxazol-3-yl)ethyl]piperazin-1-yl]pyridin-3-yl]ethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H22N4O2
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