Using COC(=O)CCN1CCCC[C@H]1COc1ccc(Oc2ccc(Cl)cc2)cc1 to produce O=C(O)CCN1CCCC[C@H]1COc1ccc(Oc2ccc(Cl)cc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.