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-piperidin-1-yl-N-[1-(2-pyridin-2-ylacetyl)-2,3-dihydroindol-5-yl]-4-(trifluoromethyl)benzamide is given. What is its corresponding molecular formula?
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C28H27F3N4O2
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