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Name the molecular formula for the molecule established as 2,2-dichloro-3-(3-chloro-4-fluorophenyl)-N-[2,4-difluoro-3-(4,4,5,5,5-pentafluoropentanoyl)phenyl]cyclopropane-1-carboxamide using the IUPAC nomenclature.
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C21H12Cl3F8NO2
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