Using COc1ccnc(C(=O)N[C@H]2COC(=O)[C@H](Cc3ccccc3)[C@@H](OC(=O)C(C)C)[C@H](C)OC2=O)c1O to produce COc1ccnc(C(=O)N[C@H]2COC(=O)[C@H](Cc3ccccc3)[C@@H](O)[C@H](C)OC2=O)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.