Using O=C1c2cc([N+](=O)[O-])ccc2-c2ccc([N+](=O)[O-])cc21 to produce Nc1ccc2c(c1)C(=O)c1cc(N)ccc1-2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.