Using CC(=O)NC(C)(C)c1ccc(Nc2cc(Br)cn(C)c2=O)nc1 to produce CCNC(C)(C)c1ccc(Nc2cc(Br)cn(C)c2=O)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.