Using CCCCCC(CC(=O)OCC)c1cccc(OC)c1OC, CC(=O)Cl to produce CCCCCC(CC(=O)OCC)c1cc(C(C)=O)cc(OC)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.