Using O=CC(O)CO, CCCCCCCCCCCCCCCCNc1ccc(C(=O)Cl)cc1 to produce CCCCCCCCCCCCCCCCNc1ccc(C(=O)C(=O)C(O)CO)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.