Using O=[O+][O-], C=CCC(CCc1cccc(C(F)(F)F)c1)C(=O)OCC to produce CCOC(=O)C(CCc1cccc(C(F)(F)F)c1)CC1COOO1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.