Using CS(N)(=O)=O, O=C(O)c1ccc(Oc2ccc(Cl)cc2)c(Br)c1 to produce CS(=O)(=O)NC(=O)c1ccc(Oc2ccc(Cl)cc2)c(Br)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.