Using O=C(Cl)c1ccc2ccccc2c1, COc1ccc2ccc3cccc4ccc1c2c34 to produce COc1c(C(=O)c2ccc3ccccc3c2)cc2ccc3cccc4ccc1c2c34, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.