Using C1CCNC1, COc1cc(-n2ccc3nc(-c4ccc(Cl)cc4)sc3c2=O)ccc1CCC=O to produce COc1cc(-n2ccc3nc(-c4ccc(Cl)cc4)sc3c2=O)ccc1CCCN1CCCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.