Using O=C1OCC(c2ccc([N+](=O)[O-])cc2)C1CS, BrCc1ccccc1 to produce O=C1OCC(c2ccc([N+](=O)[O-])cc2)C1CSCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.