Using CNC1CNC1, Nc1nc(-n2cc(C(=O)O)c(=O)c3cc(F)c(F)c(Br)c32)c(F)cc1F to produce CNC1CN(c2c(F)cc3c(=O)c(C(=O)O)cn(-c4nc(N)c(F)cc4F)c3c2Br)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.