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What is the molecular formula of the compound with this IUPAC name [1-[3,5-dibromo-4-[4-hydroxy-3-[(1-oxo-1-propan-2-yloxypropan-2-yl)carbamoyl]phenoxy]phenyl]-1-hydroxyethyl]-oxophosphanium ?
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C21H23Br2NO7P+
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