You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-(1,3-benzodioxol-5-yl)-5-[2-(2-methylimidazol-1-yl)ethyl]-3-(2-methylsulfanylethyl)-1,2,4-triazole into molecular formula.
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C18H21N5O2S
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