Using CC(C)(C)Nc1cc(-c2cncc(Br)c2)cc(-c2ccccn2)n1, COCCOC to produce COc1cccc(-c2cncc(-c3cc(NC(C)(C)C)nc(-c4ccccn4)c3)c2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.