Using COc1ccc(S)cc1, O=C(O)c1c(Cl)ccc([N+](=O)[O-])c1Cl to produce COc1ccc(Sc2c([N+](=O)[O-])ccc(Cl)c2C(=O)O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.