Using Nc1ccncn1, O=C(N1CCC(c2ccc(S(=O)(=O)Cl)cc2)CC1)C(F)(F)F to produce O=C(N1CCC(c2ccc(S(=O)(=O)Nc3ccncn3)cc2)CC1)C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.