Using CS(=O)(=O)Cl, CC1(C)CNc2cc([N+](=O)[O-])ccc21 to produce CC1(C)CN(S(C)(=O)=O)c2cc([N+](=O)[O-])ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.