Using C1COCCO1, O=C(c1ccc(Br)s1)c1nc(C(F)(F)F)nc2ccsc12 to produce COc1ccc(C(=O)c2nc(C(F)(F)F)nc3ccsc23)s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.