You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 3'-methyl-1,1-dioxospiro[1,4-thiazinan-4-ium-4,8'-8-azoniabicyclo[3.2.1]octane]-3'-ol;chloride by IUPAC nomenclature, provide its molecular formula.
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C12H22ClNO3S
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