Using NCCc1c(N)cc([N+](=O)[O-])cc1S(=O)(=O)CCC(=O)O to produce NCCc1c(N)cc(N)cc1S(=O)(=O)CCC(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.