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 1-(2-imidazo[1,2-a]pyridin-2-ylethyl)-3-[4-methoxy-3-(2,2,2-trifluoroethoxy)phenyl]urea is given. What is its corresponding molecular formula?
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C19H19F3N4O3
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