Using COc1ccc(N(C)c2nc(N)nc3ccccc23)cc1, CC(=O)Cl to produce COc1ccc(N(C)c2nc(NC(C)=O)nc3ccccc23)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.