You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[[2,5-dibromo-4-(4-carboxyanilino)-3,6-dioxocyclohexa-1,4-dien-1-yl]amino]benzoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H12Br2N2O6
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