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 [4-[5-chloro-6-(2,2,2-trifluoroethoxy)pyridine-3-carbonyl]piperazin-1-yl]-phenylmethanone is given. What is its corresponding molecular formula?
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C19H17ClF3N3O3
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