Using ClC1c2ccccc2CCc2ccccc21, CCOC(=O)CC(=O)OCC to produce CCOC(=O)C(C(=O)OCC)C1c2ccccc2CCc2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.