Using CC(C)(C)OC(=O)N1CCC(C=O)CC1, CCC(=O)CC to produce CCC(=O)C(C)C(O)C1CCN(C(=O)OC(C)(C)C)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.