You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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N-ethyl-5-[(5-methyl-1,3,4-oxadiazol-2-yl)methylsulfanyl]-1,3,4-thiadiazol-2-amine is the IUPAC name of a molecule. Please give its molecular formula.
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C8H11N5OS2
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