Using COC(=O)[C@@](CCCCB1OC(C)(C)C(C)(C)O1)(CCN1Cc2ccccc2C[C@H]1CO)NC(=O)OC(C)(C)C to produce N[C@](CCCCB(O)O)(CCN1Cc2ccccc2C[C@H]1CO)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.