Using COC(=O)c1ccc2c(=O)[nH]sc2c1, O=C(Cl)c1ccco1 to produce COC(=O)c1ccc2c(=O)n(C(=O)c3ccco3)sc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.