You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(5-chloro-2-methoxyphenyl)-3-(3-pyridin-3-yl-1,2,4-oxadiazol-5-yl)azetidine-1-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
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C18H16ClN5O3
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