Using COC(=O)c1c[nH]cc1-c1ccccc1, O=C(Cl)c1ccccc1 to produce COC(=O)c1c[nH]c(C(=O)c2ccccc2)c1-c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.