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Name the molecular formula for the molecule established as tert-butyl N-[2-[[4-[4-(3-bromo-4-fluorophenyl)-5-oxo-1,2,4-oxadiazol-3-yl]-1,2,5-oxadiazol-3-yl]-methylamino]ethyl]carbamate using the IUPAC nomenclature.
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C18H20BrFN6O5
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