You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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2-[1-[[5-(2-bromophenyl)-1H-1,2,4-triazol-3-yl]sulfanyl]ethyl]-5-methyl-1,3,4-oxadiazole is the IUPAC name of a molecule. Please give its molecular formula.
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C13H12BrN5OS
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