Using CC(C)(C)OC(=O)N1C2CCC1CC(=O)C2, Brc1cncnc1 to produce CC(C)(C)OC(=O)N1C2CCC1CC(O)(c1cncnc1)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.