Using O=C1NC(=O)c2ccccc21, CC(C)c1cc(C(C)C)c(CBr)c(C(C)C)c1 to produce CC(C)c1cc(C(C)C)c(CN2C(=O)c3ccccc3C2=O)c(C(C)C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.