Using CN(C)C=O, CC1(C)OC[C@H](COc2ccc(Br)c(C(F)F)c2)O1 to produce CC1(C)OC[C@H](COc2ccc(C=O)c(C(F)F)c2)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.