You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (2R)-N-[3-(4-chloropyrazol-1-yl)propyl]-2-(2-pyridin-2-ylethyl)piperidine-1-carboxamide by IUPAC nomenclature, provide its molecular formula.
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C19H26ClN5O
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