Using [N-]=[N+]=[N-], COC(=O)C(Oc1ccc(CBr)cc1)c1ccccc1Cl to produce COC(=O)C(Oc1ccc(CN=[N+]=[N-])cc1)c1ccccc1Cl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.