Using O=C1CCC(=O)N1Br, Cc1ncc(-c2ccc(C(F)(F)F)cc2)cn1 to produce FC(F)(F)c1ccc(-c2cnc(CBr)nc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.