You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-ethyl-4-[(4-prop-2-enyl-5-pyridin-4-yl-1,2,4-triazol-3-yl)sulfanylmethyl]-1,3-thiazole into molecular formula.
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C16H17N5S2
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