Using FC(F)(F)c1ccccc1OCCCBr, Cc1nc(N)nc(N)c1O to produce Cc1nc(N)nc(N)c1OCCCOc1ccccc1C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.