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Under IUPAC nomenclature, a molecule named 5-fluoro-6-[3-[2-[(3R)-3-hydroxy-1-methyl-2-oxopyrrolidin-3-yl]ethynyl]phenyl]-3-[[(2S)-oxetan-2-yl]methylamino]pyridine-2-carboxamide is given. What is its corresponding molecular formula?
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C23H23FN4O4
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