Using COC(=O)C1(NC(=O)c2ccc(Cl)c(OC(C)=O)c2)CCCCCC1 to produce COC(=O)C1(NC(=O)c2ccc(Cl)c(O)c2)CCCCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.