Using BrCc1ccccc1, O=C(Cn1cncn1)c1ccc(Cl)cc1Cl to produce Clc1ccc(C(=Cn2cncn2)OCc2ccccc2)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.