Using C=CCn1c(Cl)nc2[nH]c(=O)n(CCCCc3nc(-c4ccccn4)no3)c(=O)c21, CCCI to produce CCCn1c(=O)n(CCCCc2nc(-c3ccccn3)no2)c(=O)c2[nH]c(Cl)nc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.