You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 2-thieno[2,3-d]pyrimidin-4-ylsulfanyl-1-[4-(thiophen-2-ylmethyl)piperazin-1-yl]ethanone into molecular formula.
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C17H18N4OS3
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