Using Cn1cc(C=O)c(-c2ccc([N+](=O)[O-])o2)n1, NNc1cnc2ccccc2c1 to produce Cn1cc(C=NNc2cnc3ccccc3c2)c(-c2ccc([N+](=O)[O-])o2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.