You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Can you give the molecular formula of the molecule 1-(2,2-difluoroethyl)-3-[4-[4-[(3S)-3-methylmorpholin-4-yl]-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-2-yl]phenyl]urea ?
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C21H26F2N6O2
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