Using COc1c(C)cnc(CN2c3nc(N)ncc3NC(=O)[C@@H]2C)c1C to produce COc1c(C)cnc(CN2c3nc(N)ncc3NC[C@@H]2C)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.