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-(5,6-dimethyl-4-oxo-3H-thieno[2,3-d]pyrimidin-2-yl)-N-[(E)-[4-(3-methylbutoxy)phenyl]methylideneamino]acetamide is given. What is its corresponding molecular formula?
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C22H26N4O3S
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