You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named [2-(2,3-dihydro-1,4-benzodioxin-6-ylamino)-2-oxoethyl] 2-(2,4-dioxo-1,3-diazaspiro[4.4]nonan-3-yl)acetate by IUPAC nomenclature, provide its molecular formula.
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C19H21N3O7
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