Using O=C1Cc2cc(Cl)ccc2N1, COc1cc(N2CCN(C(=O)CCl)CC2)ccc1Cl to produce COc1cc(N2CCN(C(=O)CN3C(=O)Cc4cc(Cl)ccc43)CC2)ccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.