Using COC[C@@H]1CCCN1C(=O)CCC(NC(=O)OC(C)(C)C)C(=O)OC to produce COC[C@@H]1CCCN1C(=O)CCC(NC(=O)OC(C)(C)C)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.