You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 2-ethyl-4-methyl-N-[4-propan-2-yloxy-1-(2,2,2-trifluoroethyl)indazol-3-yl]-1,3-oxazole-5-carboxamide into molecular formula.
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C19H21F3N4O3
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