Using CC(=O)O, COc1cc(C)c(C(=O)c2c(Cl)cccc2Cl)cc1OC to produce COc1cc(C)c(C(=O)c2c(Cl)cccc2Cl)cc1OCC1CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.