Using FC(F)(F)c1cccc(N2CCNCC2)c1, Fc1ccc2nnn(CCCCCl)c2c1 to produce Fc1ccc2nnn(CCCCN3CCN(c4cccc(C(F)(F)F)c4)CC3)c2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.