Using CC(C)(C)C(=O)CBr, CCOC(=O)c1cc(N)n(-c2ccccc2)n1 to produce CCOC(=O)c1cc(NCC(=O)C(C)(C)C)n(-c2ccccc2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.