Using COC(=O)c1ccc(C(=O)O)cc1, COc1cccc(CCNC(=O)CCN)c1 to produce COC(=O)c1ccc(C(=O)NCCC(=O)NCCc2cccc(OC)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.