Using COC(OC)c1ccccc1, CC(NC(=O)OCc1ccccc1)C(=O)O to produce CC1C(=O)OC(c2ccccc2)N1C(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.