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What is the molecular formula of the compound with this IUPAC name tert-butyl (4aS)-8-bromo-7-chloro-9-fluoro-10-(4-methyl-2-propan-2-ylpyridin-3-yl)oxy-11-oxo-2,4,4a,5-tetrahydro-1H-pyrazino[2,1-c][1,4]benzoxazepine-3-carboxylate ?
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C26H30BrClFN3O5
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