Using CS(=O)(=O)OCCCNc1ccnc2cc(Cl)ccc12, COc1ccc(N2CCNCC2)cc1 to produce COc1ccc(N2CCN(CCCNc3ccnc4cc(Cl)ccc34)CC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.