Using CC(C)(C)OC(=O)N1CCC2(CC1)OCCO2, CC1CC(=O)CCN1C(=O)OC(C)(C)C to produce CC1CC2(CCN1C(=O)OC(C)(C)C)OCCO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.