Using COC(=O)c1ccc(C(C)(C)C)cc1O, Fc1cccc(C(F)(F)F)n1 to produce COC(=O)c1ccc(C(C)(C)C)cc1Oc1cccc(C(F)(F)F)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.