You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-bromo-5-chloro-N-[1-(5-methyl-1,2,4-oxadiazol-3-yl)cycloheptyl]benzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H19BrClN3O2
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