Using [N-]=[N+]=[N-], CC(C)(C)OC(=O)N(C(=O)OC(C)(C)C)c1nccc2ccc(CBr)cc12 to produce CC(C)(C)OC(=O)N(C(=O)OC(C)(C)C)c1nccc2ccc(CN=[N+]=[N-])cc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.