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 6-bromo-3'-methyl-2'-methylsulfanyl-2-(1,2,3,4-tetrahydronaphthalen-1-yl)spiro[2,3,6,7-tetrahydrochromene-4,5'-imidazole]-4'-one is given. What is its corresponding molecular formula?
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C23H25BrN2O2S
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