You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 2-methoxyethyl 5-(4-chlorophenyl)-7-methyl-3-oxo-2-[(3-propan-2-yloxyphenyl)methylidene]-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate by IUPAC nomenclature, provide its molecular formula.
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C27H27ClN2O5S
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