Using COC1CCNCC1, O=C(O)c1cccc(Cc2n[nH]c(=O)c3cccc(Cl)c23)c1 to produce COC1CCN(C(=O)c2cccc(Cc3n[nH]c(=O)c4cccc(Cl)c34)c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.