Using O=C1CCC(=O)N1Br, COC(=O)c1scc(C)c1NC(=O)C(F)(F)F to produce COC(=O)c1sc(Br)c(C)c1NC(=O)C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.