Using OC(c1ccc(CBr)cc1)(C(F)(F)F)C(F)(F)F, Nc1ccc2c(ccn2C2CCNCC2)c1 to produce Nc1ccc2c(ccn2C2CCN(Cc3ccc(C(O)(C(F)(F)F)C(F)(F)F)cc3)CC2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.