You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (6E)-6-[[4-[2-(4-bromophenoxy)ethoxy]-3-chloro-5-methoxyphenyl]methylidene]-7-imino-2-methyl-[1,2]oxazolo[2,3-a]pyrimidin-5-one by IUPAC nomenclature, provide its molecular formula.
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C23H19BrClN3O5
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