Using CCN1CCNCC1, O=C(O)c1cc([N+](=O)[O-])cc(C(F)(F)F)c1 to produce CCN1CCN(C(=O)c2cc([N+](=O)[O-])cc(C(F)(F)F)c2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.