Using CCOC(=O)C1CCCCC1=O, CCOC(=O)C(C)c1ccc(CCl)cc1 to produce CCOC(=O)C(C)c1ccc(CC2(C(=O)OCC)CCCCC2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.