Using CSCC(CO)(CO)NCc1cn(COCc2ccccc2)c2c(OC(C)(C)C)ncnc12 to produce CSCC(CO)(CO)NCc1c[nH]c2c(=O)[nH]cnc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.