Using C=CCOc1ccc(OCC(=O)OCC)c(OCC(=O)OCC)c1, CC(=O)Cl to produce CCOC(=O)COc1cc(O)c(C(C)=O)cc1OCC(=O)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.