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-amino-3-(2,5-dimethylfuran-3-yl)-6-oxopyridazin-1-yl]-N-(4-methylsulfanylphenyl)acetamide is given. What is its corresponding molecular formula?
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C19H20N4O3S
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