You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule propan-2-yl 4-(3-bromo-4-ethoxy-5-methoxyphenyl)-6-methyl-2-oxo-3,4-dihydro-1H-pyrimidine-5-carboxylate into molecular formula.
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C18H23BrN2O5
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