Using CN(C[C@H](CC1CCC(O)CC1)NC(=O)OC(C)(C)C)C(=O)OCc1ccccc1 to produce CN(C[C@H](CC1CCC(=O)CC1)NC(=O)OC(C)(C)C)C(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.