Using O=C(O)c1cc(N2CCOCC2)cc([N+](=O)[O-])c1, CC(=O)NN to produce CC(=O)NNC(=O)c1cc(N2CCOCC2)cc([N+](=O)[O-])c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.