Using BrCCCBr, CCCNS(=O)(=O)c1ccccc1[N+](=O)[O-] to produce CCCN(CCCBr)S(=O)(=O)c1ccccc1[N+](=O)[O-], please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.