Using O=C(Nc1cc(-c2cnccn2)ccc1[N+](=O)[O-])N1CCCC1 to produce Nc1ccc(-c2cnccn2)cc1NC(=O)N1CCCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.