Using CCOC(=O)c1c(O)c2cc(Cl)ccc2n(Cc2ccc(OC)cc2)c1=O, O=S(=O)(O)C(F)(F)F to produce CCOC(=O)c1c(OS(=O)(=O)C(F)(F)F)c2cc(Cl)ccc2n(Cc2ccc(OC)cc2)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.