You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named 2,2,2-trifluoro-1-[5-(4-pyridin-2-ylpiperazine-1-carbonyl)thiophen-2-yl]ethanone is given. What is its corresponding molecular formula?
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C16H14F3N3O2S
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