Using O=c1[nH]nc(Cc2cc([N+](=O)[O-])cs2)c2ccccc12 to produce Nc1csc(Cc2n[nH]c(=O)c3ccccc23)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.