Using O=C(n1ccnc1)C(F)(F)F, CCCC(=O)c1ccc(Br)cc1 to produce CCC(C(=O)c1ccc(Br)cc1)C(=O)C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.