Using O=[N+]([O-])c1ccc(-c2nnsc2-c2ccc([N+](=O)[O-])cc2)cc1 to produce Nc1ccc(-c2nnsc2-c2ccc(N)cc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.