Using CC1(C(=O)O)CC1, O=c1[nH]nc(C[C@@H]2CCNC2)n1-c1ccc(Br)cc1 to produce CC1(C(=O)N2CC[C@@H](Cc3n[nH]c(=O)n3-c3ccc(Br)cc3)C2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.