Using CN1CCN(Cc2cc([N+](=O)[O-])cc(C(F)(F)F)c2)CC1 to produce CN1CCN(Cc2cc(N)cc(C(F)(F)F)c2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.