You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(6-chloropyridin-3-yl)sulfonyl-ethylamino]-N-(2,3-dihydro-1,4-benzodioxin-6-yl)acetamide is the IUPAC name of a molecule. Please give its molecular formula.
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C17H18ClN3O5S
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