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 8-O-ethyl 6-O-methyl (2E)-5-amino-3-oxo-7-pyridin-4-yl-2-(pyridin-4-ylmethylidene)-7H-[1,3]thiazolo[3,2-a]pyridine-6,8-dicarboxylate into molecular formula.
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C23H20N4O5S
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