Using CCOC(=O)CC(=O)N(Cc1ccccc1)n1c(Cl)c(Cl)c(Cl)c1C(=O)OC to produce COC(=O)c1c(O)c2c(Cl)c(Cl)c(Cl)n2n(Cc2ccccc2)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.