Using CCOC(=O)CCCCCC(=O)Nc1ccccc1NC(=O)OC(C)(C)C to produce CC(C)(C)OC(=O)Nc1ccccc1NC(=O)CCCCCC(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.