Using COc1cc(C)cc2cc(-c3c(COCC(N)=O)c(CN4CCNCC4)n4ncnc(N)c34)sc12, CC(=O)Cl to produce COc1cc(C)cc2cc(-c3c(COCC(N)=O)c(CN4CCN(C(C)=O)CC4)n4ncnc(N)c34)sc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.