Using O=C1CNCCN1, O=C(O)c1cc(-c2cc(F)cc(Cl)c2)n(-c2cccnc2)n1 to produce O=C1CN(C(=O)c2cc(-c3cc(F)cc(Cl)c3)n(-c3cccnc3)n2)CCN1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.