Using OB(O)c1ccc(F)cc1, CCOC(=O)c1c(C)nn2c(C3CCCCC3)c(Br)cnc12 to produce CCOC(=O)c1c(C)nn2c(C3CCCCC3)c(-c3ccc(F)cc3)cnc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.