Using O=Cc1ccc(Cl)cc1Cl, CC(C)(C)OC(=O)N1CC(CN)C1 to produce CC(C)(C)OC(=O)N1CC(CNCc2ccc(Cl)cc2Cl)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.