Using CC(=O)Oc1ccc(C(=O)N2CCN(C(=O)OC(C)(C)C)CC2)cc1 to produce CC(C)(C)OC(=O)N1CCN(C(=O)c2ccc(O)cc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.