Using ClCc1cn2cc(Cl)ccc2n1, COc1cccc(N2CCNCC2)c1 to produce COc1cccc(N2CCN(Cc3cn4cc(Cl)ccc4n3)CC2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.