Using Cc1cccc(-c2nc(Cl)cc(Cl)n2)n1, NCc1cccc2[nH]ccc12 to produce Cc1cccc(-c2nc(Cl)cc(NCc3cccc4[nH]ccc34)n2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.