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 3-[2-fluoro-5-[7-(2-hydroxypropan-2-yl)imidazo[1,2-a]pyrimidin-3-yl]phenyl]pyridine-4-carboxamide is given. What is its corresponding molecular formula?
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C21H18FN5O2
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