Using O=C(c1ccc(F)cc1)c1ccc(F)cc1, CCOC(=O)CC(C)C to produce CCOC(=O)C(C(C)C)C(O)(c1ccc(F)cc1)c1ccc(F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.