Using Fc1c(Cl)ccc(Br)c1F, CC(C)OB1OC(C)(C)C(C)(C)O1 to produce CC1(C)OB(c2ccc(Cl)c(F)c2F)OC1(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.