Using Cc1ccc(N2CCC(CCCl)CC2)nn1, Oc1ccc2nc(Cl)cnc2c1 to produce Cc1ccc(N2CCC(CCOc3ccc4nc(Cl)cnc4c3)CC2)nn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.