Using O=C(Nc1cccc([N+](=O)[O-])c1)c1cccc([N+](=O)[O-])c1 to produce Nc1cccc(NC(=O)c2cccc(N)c2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.