Using COc1cccc(Sc2sc(CN(C)C(=O)OC(C)(C)C)cc2Br)c1, OB(O)c1ccccc1F to produce COc1cccc(Sc2sc(CN(C)C(=O)OC(C)(C)C)cc2-c2ccccc2F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.