Using C[O-], COc1nn(C(c2ccccc2)(c2ccccc2)c2ccccc2)c2cc(Cl)nc(CBr)c12 to produce COCc1nc(Cl)cc2c1c(OC)nn2C(c1ccccc1)(c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.