Using COc1ccc(-c2sc3cc(OC)ccc3c2Br)cc1, O=C(O)C(F)(F)F to produce COc1ccc(C2=C(Br)c3ccc(OC)cc3S2=O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.