Using O=C(O)c1nc(-c2ccc(Cl)cc2)n(-c2ccccc2Cl)c1CCNC1CCCC1 to produce O=C1c2nc(-c3ccc(Cl)cc3)n(-c3ccccc3Cl)c2CCN1C1CCCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.