Using COC(=O)c1nnc(Cc2c(Cl)cncc2Cl)c2ccc(OC)cc12, N to produce COc1ccc2c(Cc3c(Cl)cncc3Cl)nnc(C(N)=O)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.