Using COc1cc(CCC(=O)O)cc(OC)c1OC, COC(=O)c1ccc(N)cc1 to produce COC(=O)c1ccc(NC(=O)CCc2cc(OC)c(OC)c(OC)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.