Using Cn1c2ccccc2c2ccccc21, O=C(Cl)c1ccccc1 to produce Cn1c2ccc(C(=O)c3ccccc3)cc2c2cc(C(=O)c3ccccc3)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.