Using O=C1c2cccc([N+](=O)[O-])c2C(=O)c2cccc([N+](=O)[O-])c21 to produce Nc1cccc2c1C(=O)c1cccc([N+](=O)[O-])c1C2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.