Using Br[Mg]c1cccs1, CCOC(=O)C1=Cc2cc(Cl)c(C=O)cc2OC1C(F)(F)F to produce CCOC(=O)C1=Cc2cc(Cl)c(C(O)c3cccs3)cc2OC1C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.