Using O=C1CCC(=O)N1Br, CSc1nc(Cl)c(C)c(-c2ccc(F)cc2F)n1 to produce CSc1nc(Cl)c(CBr)c(-c2ccc(F)cc2F)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.