Using CCCCCCCCCCO, O=C(Cl)c1ccc2cc(C(=O)Cl)ccc2c1 to produce CCCCCCCCCCOC(=O)c1ccc2cc(C(=O)Cl)ccc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.