Using CN1CCNCC1, CSC1=Nc2cc(Cl)ccc2N(C)c2cscc21 to produce CN1CCN(C2=Nc3cc(Cl)ccc3N(C)c3cscc32)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.