Using CCn1cc(C(=O)C(=O)N(C)C)c2c(OC)cc(Br)cc21, OB(O)c1ccccc1 to produce CCn1cc(C(=O)C(=O)N(C)C)c2c(OC)cc(-c3ccccc3)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.