Using COCCn1c(-c2ccc(C(C)C)cc2)nc2c(C(F)(F)F)c(CO)cc(OC)c21, BrC(Br)(Br)Br to produce COCCn1c(-c2ccc(C(C)C)cc2)nc2c(C(F)(F)F)c(CBr)cc(OC)c21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.