Using CCC(=O)CC(=O)CC, CCC(=CCCc1ccc(C(=O)OC)cc1)CCI to produce CCC(=O)C(CCC(=CCCc1ccc(C(=O)OC)cc1)CC)C(=O)CC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.