Using Nc1nc(N)c2c(OCC3CCNCC3)cccc2n1, Fc1ccc(CBr)cc1F to produce Nc1nc(N)c2c(OCC3CCN(Cc4ccc(F)c(F)c4)CC3)cccc2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.