Using Oc1cccc(-c2cc(C(F)(F)F)nn2-c2ccccc2Cl)c1, COC(=O)CBr to produce COC(=O)COc1cccc(-c2cc(C(F)(F)F)nn2-c2ccccc2Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.