Using Clc1cc(Cl)ncn1, Cc1ccc(C(=O)N2CCNCC2)cc1F to produce Cc1ccc(C(=O)N2CCN(c3cc(Cl)ncn3)CC2)cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.