Using CC(C)(C)OC(=O)N=NC(=O)OC(C)(C)C, CC1CCc2ccc(Br)cc21 to produce CC1=CCc2ccc(N(NC(=O)OC(C)(C)C)C(=O)OC(C)(C)C)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.