Using C[C@@H]1[C@H](COCc2ccccc2)N(C(=O)OC(C)(C)C)CCN1S(C)(=O)=O to produce C[C@@H]1[C@H](CO)N(C(=O)OC(C)(C)C)CCN1S(C)(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.