Using [N-]=[N+]=[N-], CCCC(C)COc1ccc([C@H](CBr)NC(=O)OC(C)(C)C)cc1 to produce CCCC(C)COc1ccc([C@H](CN=[N+]=[N-])NC(=O)OC(C)(C)C)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.