Using COC(=O)C1CNC1, FC(F)(F)c1ccc(CBr)c(C(F)(F)F)c1 to produce COC(=O)C1CN(Cc2ccc(C(F)(F)F)cc2C(F)(F)F)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.