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 (8R)-8-(4-bromophenyl)-3-(furan-2-ylmethyl)-6-oxo-2,4,7,8-tetrahydropyrido[2,1-b][1,3,5]thiadiazine-9-carbonitrile is given. What is its corresponding molecular formula?
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C19H16BrN3O2S
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