Using O=C1c2ccccc2C(=O)N1c1cc[nH]n1, CC(C)(C)OC(=O)CBr to produce CC(C)(C)OC(=O)Cn1ccc(N2C(=O)c3ccccc3C2=O)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.