Using Cc1c(O)ccc(F)c1NCc1cc(-c2cccc(F)c2)ccc1F, CC(C)OC(=O)CBr to produce Cc1c(OCC(=O)OC(C)C)ccc(F)c1NCc1cc(-c2cccc(F)c2)ccc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.