Using CCCc1cc(CBr)ccc1OC(C(=O)OC)c1ccccc1, [N-]=[N+]=[N-] to produce CCCc1cc(CN=[N+]=[N-])ccc1OC(C(=O)OC)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.