Using ClCc1nc2ccccc2n1-c1ccccc1, Nc1nc(Cl)c2cn[nH]c2n1 to produce Nc1nc(Cl)c2cnn(Cc3nc4ccccc4n3-c3ccccc3)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.