Using OCC(O)c1ccc2c(c1)CCc1c-2noc1C1CCC(c2ccc(Cl)cc2)CC1 to produce OCc1ccc2c(c1)CCc1c-2noc1C1CCC(c2ccc(Cl)cc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.