Using O=C1c2ccccc2C(=O)N1C1CCNC1, COc1ccc(CCCl)cc1OC to produce COc1ccc(CCN2CCC(N3C(=O)c4ccccc4C3=O)C2)cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.