Using C[O-], Clc1cc(I)cc(Cl)c1Nc1nc2ccc(Br)cc2c2c(Cl)nccc12 to produce COc1nccc2c(Nc3c(Cl)cc(I)cc3Cl)nc3ccc(Br)cc3c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.