Using CC(C)(C)OC(=O)N1CC(C)(C)c2ncc(Br)cc21, CCCC(=O)N(C)OC to produce CCCC(=O)c1cnc2c(c1)N(C(=O)OC(C)(C)C)CC2(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.