Using O=C1NC(=O)c2c(-c3ccccc3[N+](=O)[O-])ccc(-c3ccccc3)c21 to produce O=C1NC(=O)c2c1c(-c1ccccc1)cc1[nH]c3ccccc3c21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.