Using CCOC(=O)C1(Br)CCC1, O=[N+]([O-])c1cn[nH]c1 to produce CCOC(=O)C1(n2cc([N+](=O)[O-])cn2)CCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.