Using CC(=O)CCN(CCNC(=O)OC(C)(C)C)c1nc2cc(Cl)ccc2o1 to produce CC(=O)CCN(CCN)c1nc2cc(Cl)ccc2o1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.