Using CSCC(N)(CO)CO, O=Cc1cn(COCc2ccccc2)c2c(Cl)ncnc12 to produce CSCC(CO)(CO)NCc1cn(COCc2ccccc2)c2c(Cl)ncnc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.