Using Cn1ccc2cc(B(O)O)ccc21, CC(C)(C)OC(=O)c1c(F)nc(Br)c(Br)c1F to produce Cn1ccc2cc(-c3nc(F)c(C(=O)OC(C)(C)C)c(F)c3Br)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.