Using CCOC(=O)CC1OB(O)c2cc(O)cc(CBr)c21, [N-]=[N+]=[N-] to produce CCOC(=O)CC1OB(O)c2cc(O)cc(CN=[N+]=[N-])c21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.