Using Sc1ccncn1, FC(F)(F)c1cccc(N2CCN(CCCCl)CC2)c1 to produce FC(F)(F)c1cccc(N2CCN(CCCSc3ccncn3)CC2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.