Using CI, O=C(c1ccc2[nH]c(=O)oc2c1)c1cc(Cl)ncn1 to produce Cn1c(=O)oc2cc(C(=O)c3cc(Cl)ncn3)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.