You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 4-[2-[3-(4-pyridin-2-ylpiperazin-1-yl)azetidin-1-yl]ethyl]-1,4-oxazepan-3-one into its molecular formula.
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C19H29N5O2
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