Using O=Cc1cnc(Cl)c(Cl)c1, CS(=O)(=O)N1CCNCC1 to produce CS(=O)(=O)N1CCN(Cc2cnc(Cl)c(Cl)c2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.