Using C[O-], COc1cc(C(C)C)c(Oc2cnc(N)nc2N)cc1NC(=O)CCCCl to produce COc1cc(C(C)C)c(Oc2cnc(C)nc2N)cc1N1CCCC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.