Using CCOC(=O)Cc1ccc(O)c(Br)c1, O=S(=O)(OCC(F)F)C(F)(F)F to produce CCOC(=O)Cc1ccc(OCC(F)F)c(Br)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.