Using CC(=O)Nc1cc(NC2CCN(C(=O)OC(C)(C)C)CC2)nc(Cl)n1 to produce CC(=O)Nc1cc(NC2CCNCC2)nc(Cl)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.