Using ClCc1cn(-c2ccc(Cl)c(Cl)c2)cn1, O=Cc1ncc[nH]1 to produce O=Cc1nccn1Cc1cn(-c2ccc(Cl)c(Cl)c2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.