Using CC(C)(C)OC(=O)NC1=N[C@@]2(c3cc(Br)ccc3F)CO[C@@H](CO)C[C@H]2CS1, COCCN(CCOC)S(F)(F)F to produce CC(C)(C)OC(=O)NC1=N[C@@]2(c3cc(Br)ccc3F)CO[C@@H](CF)C[C@H]2CS1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.