You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named ethyl (6R)-4-[[4-(2-chlorobenzoyl)piperazin-1-yl]methyl]-6-(2-fluorophenyl)-3-methyl-2-oxo-1,6-dihydropyrimidine-5-carboxylate by IUPAC nomenclature, provide its molecular formula.
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C26H28ClFN4O4
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