You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule propan-2-yl 2-[5-bromo-2,6-dimethyl-4-(3-propan-2-ylazetidin-1-yl)pyridin-3-yl]acetate into molecular formula.
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C18H27BrN2O2
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