You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-[(4-bromo-2-fluorophenyl)methyl]-1,5-dimethyl-6-oxopyridin-3-yl]-1-(2,3-dihydroxypropyl)cyclopropane-1-sulfonamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H24BrFN2O5S
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