Using COc1cc(CCC(=O)O)cc(OC)c1OC, COC(=O)[C@H]1CC[C@@H](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.