Using NC(=O)Nc1[nH]c(-c2cccc([N+](=O)[O-])c2)cc1C(N)=O to produce NC(=O)Nc1[nH]c(-c2cccc(N)c2)cc1C(N)=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.