Using [N-]=[N+]=[N-], CCOC(CBr)=Nc1ccc(Cl)cc1C(=O)c1ccccc1 to produce CCOC(CN=[N+]=[N-])=Nc1ccc(Cl)cc1C(=O)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.