Using CC(C)CCBr, O=Cc1cccc(-c2ccc(C(F)(F)F)cc2)n1 to produce CC(C)CCC(O)c1cccc(-c2ccc(C(F)(F)F)cc2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.