Using O=C(Nc1ccncc1F)c1cnc2c(Br)cc(Cl)nn12, Cc1cc(N)no1 to produce Cc1cc(Nc2cc(Cl)nn3c(C(=O)Nc4ccncc4F)cnc23)no1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.