Using CCOC(=O)CN1CCN(C(=O)OC(C)(C)C)CC1, CNOC to produce CON(C)C(=O)CN1CCN(C(=O)OC(C)(C)C)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.