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 5-ethyl-1,1-dioxo-3,4-dihydro-2H-1lambda6,4-benzothiazine-3-carbonitrile is given. What is its corresponding molecular formula?
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C11H12N2O2S
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