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-cyano-N-(2-methoxyethyl)-2-(7-oxo-3,6-dihydro-2H-[1,4]dioxino[2,3-f]indol-8-ylidene)acetamide by IUPAC nomenclature, provide its molecular formula.
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C16H15N3O5
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