Using CC(C)(C)OC(=O)[C@H]1CCCN1C(=O)COc1cccc(O)c1 to produce O=C(O)[C@H]1CCCN1C(=O)COc1cccc(O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.