Using CC(C)(C)OC(=O)N[C@@H](Cc1ccc(O)c(O)c1)C(=O)O, O=C(OCC1CO1)c1ccccc1 to produce CC(C)(C)OC(=O)N[C@@H](Cc1ccc(O)c(O)c1)C(=O)OCC(O)COC(=O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.