Using ClCc1ccccc1, C=CC(C)(CCC=C(C)C)OC(=O)CC(C)=O to produce C=CC(C)(CCC=C(C)C)OC(=O)C(Cc1ccccc1)C(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.