You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (2Z,5S)-2-[(5-bromo-2,4-dimethoxyphenyl)methylidene]-5-(4-ethoxyphenyl)-7-methyl-3-oxo-N-phenyl-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxamide by IUPAC nomenclature, provide its molecular formula.
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C31H28BrN3O5S
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