Using CCOC(=O)c1c(CN2C(=O)c3ccccc3C2=O)nc(C)c(C(=O)OC)c1-c1cccc(Cl)c1Cl to produce COC(=O)c1c(C)nc2c(c1-c1cccc(Cl)c1Cl)C(=O)NC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.