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 N-(1,3-benzodioxol-5-ylmethyl)-2-[6-(2-methylphenyl)pyridazin-3-yl]sulfanylacetamide is given. What is its corresponding molecular formula?
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C21H19N3O3S
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