You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 4-[2-(1-cyclopropylethyl)-5-(methylsulfonylmethyl)-1,2,4-triazol-3-yl]-2-methylsulfanylpyridine into its molecular formula.
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C15H20N4O2S2
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