You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 2-(4-nitrophenyl)-N-[3-([1,3]thiazolo[5,4-b]pyridin-2-yl)phenyl]acetamide is given. What is its corresponding molecular formula?
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C20H14N4O3S
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