Using CCCC[C@H]1[C@H](C)OC(=O)[C@@H](NC(=O)OC(C)(C)C)CCC[C@@H]1OCc1ccccc1 to produce CCCC[C@H]1[C@H](C)OC(=O)[C@@H](NC(=O)OC(C)(C)C)CCC[C@@H]1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.