You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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(4-pyrrol-1-ylphenyl)-[4-[5-(trifluoromethyl)-1,3,4-oxadiazol-2-yl]piperidin-1-yl]methanone is the IUPAC name of a molecule. Please give its molecular formula.
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C19H17F3N4O2
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