Using CCCS(=O)(=O)Nc1ccc(F)c(C(=O)OCc2ccccc2)c1F to produce CCCS(=O)(=O)Nc1ccc(F)c(C(=O)O)c1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.