Using O=[N+]([O-])c1ccc2c(c1)c1ccccc1n2CCS(=O)(=O)c1ccccc1 to produce O=[N+]([O-])c1ccc2[nH]c3ccccc3c2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.