Using OB(O)c1ccc(F)cc1, COC(=O)c1ncc2c(Br)c(-c3ccc(F)cc3)sc2c1O to produce COC(=O)c1ncc2c(-c3ccc(F)cc3)c(-c3ccc(F)cc3)sc2c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.