You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named methyl (1R,4R)-2-[4-chloro-6-[(5-cyclopropyl-1H-pyrazol-3-yl)amino]-1,3,5-triazin-2-yl]-4-(2,2-difluoroethoxy)cyclopentane-1-carboxylate by IUPAC nomenclature, provide its molecular formula.
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C18H21ClF2N6O3
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