Using CCOC(=O)C(CCOC)c1cc(Cl)c(OCC2CC2)c(Br)c1, OB(O)c1ccc(C(F)(F)F)cc1 to produce CCOC(=O)C(CCOC)c1cc(Cl)c(OCC2CC2)c(-c2ccc(C(F)(F)F)cc2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.