Using CCOC(=O)c1nn(-c2ccc(CBr)cc2)nc1C, CC(C)[N+](=O)[O-] to produce CCOC(=O)c1nn(-c2ccc(C=O)cc2)nc1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.