Using CCc1nn(CCN)c(CC)c1Cc1cc(Cl)cc(Cl)c1, O=C(O)c1ccccc1 to produce CCc1nn(CCNC(=O)c2ccccc2)c(CC)c1Cc1cc(Cl)cc(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.