Using CC(=O)c1cccc(NC(=O)C(C)Br)c1, [N-]=[N+]=[N-] to produce CC(=O)c1cccc(NC(=O)C(C)N=[N+]=[N-])c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.