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-(methylamino)-2-(1-methylpyrazol-4-yl)-N-[1-[3-(trifluoromethoxy)phenyl]ethyl]acetamide is given. What is its corresponding molecular formula?
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C16H19F3N4O2
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