You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 5-[[5-bromo-4-[(2,4-difluorophenyl)methoxy]-2-methyl-6-oxo-1H-pyridin-3-yl]methyl]-N-(2,3-dihydroxypropyl)pyrazine-2-carboxamide .
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C22H21BrF2N4O5
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