Using CCS, Cc1c(N2C(=O)c3ccccc3C2=O)c(Cl)nc2ccccc12 to produce CCSc1nc2ccccc2c(C)c1N1C(=O)c2ccccc2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.