Using C1=COCCC1, CC(O)C1CCN(C(=O)OC(C)(C)C)C1=O to produce CC(OC1CCCCO1)C1CCN(C(=O)OC(C)(C)C)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.