Using CCOC(=O)c1c(Br)sc(C)c1C(F)(F)F, OB(O)c1ccc(Cl)cc1 to produce CCOC(=O)c1c(-c2ccc(Cl)cc2)sc(C)c1C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.