You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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S-[3-[[1-(1,3-thiazol-4-ylmethyl)pyrazol-3-yl]methylidene]piperidin-4-yl] ethanethioate is the IUPAC name of a molecule. Please give its molecular formula.
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C15H18N4OS2
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