Using O=C1NC(=O)c2ccccc21, Cn1c(CI)nc(-c2ccncn2)cc1=O to produce Cn1c(CN2C(=O)c3ccccc3C2=O)nc(-c2ccncn2)cc1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.