Using O=S(=O)(O)O, Cn1nc(-c2cc(CBr)c(Cl)cc2Cl)c(Cl)c1OC(F)F to produce Cn1nc(-c2cc(C=O)c(Cl)cc2Cl)c(Cl)c1OC(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.