Using COC(=O)CC1(CNC(=O)OC(Cl)C(C)C)CCCCC1, CC(C)C(=O)O to produce COC(=O)CC1(CNC(=O)OC(OC(=O)C(C)C)C(C)C)CCCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.