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 (2E,5R)-2-[(4-hydroxy-3,5-dimethoxyphenyl)methylidene]-5-(3-methoxyphenyl)-7-methyl-3-oxo-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate by IUPAC nomenclature, provide its molecular formula.
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C26H26N2O7S
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