Using CCOC(=O)C1(C(=O)OCC)Oc2c(ccc(OC)c2Cl)C1O to produce CCOC(=O)C1(C(=O)OCC)Cc2ccc(OC)c(Cl)c2O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.