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