Using COC(=O)c1snc(-c2cc(C(F)(F)F)cc(C(F)(F)F)c2)c1C(=O)OC to produce O=C(O)c1snc(-c2cc(C(F)(F)F)cc(C(F)(F)F)c2)c1C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.