Using Cc1ncc(CN(C(=O)OC(C)(C)C)c2ccc(C#N)cc2)c(CO)c1OCc1cccc(C#N)c1, COCCN(CCOC)S(F)(F)F to produce Cc1ncc(CN(C(=O)OC(C)(C)C)c2ccc(C#N)cc2)c(CF)c1OCc1cccc(C#N)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.