Using CC(C)N1Cc2c(nn(-c3ccccc3Cl)c2-c2ccc(Cl)cc2)C1=O to produce CC(C)N1Cc2nn(-c3ccccc3Cl)c(-c3ccc(Cl)cc3)c2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.