Using Cn1c(N2CC3C[C@H]2CN3)nc(-c2ccncn2)cc1=O, O=C(Cl)c1ccccc1 to produce Cn1c(N2CC3C[C@H]2CN3C(=O)c2ccccc2)nc(-c2ccncn2)cc1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.