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