Using O=C1CCC(=O)N1Br, CC1(C)CC(c2ccc(N)cn2)CC(C)(C)O1 to produce CC1(C)CC(c2ccc(N)c(Br)n2)CC(C)(C)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.