Using C[C@@H](CO)NC(=O)OC(C)(C)C, CC(=O)Oc1ccc(O)cc1 to produce CC(=O)Oc1ccc(OC[C@H](C)NC(=O)OC(C)(C)C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.