Using CCOC(=O)/C=C(\O)c1c(Cl)cccc1C1(C(=O)OCC)CCOCC1 to produce CCOC(=O)C1C(=O)C2(CCOCC2)c2cccc(Cl)c2C1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.