Using COc1cc2nccc(Oc3ccc(N)cc3)c2cc1OC, O=C(O)C1CCCC1 to produce COc1cc2nccc(Oc3ccc(NC(=O)C4CCCC4)cc3)c2cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.