Using CC(C)(Br)C(=O)NCCOCc1ccccc1, [N-]=[N+]=[N-] to produce CC(C)(N=[N+]=[N-])C(=O)NCCOCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.