Using O=C(c1ccccc1)c1cc(Br)ccc1-n1c(CN2C(=O)c3ccccc3C2=O)nnc1CN1C(=O)c2ccccc2C1=O to produce NCc1nnc2n1-c1ccc(Br)cc1C(c1ccccc1)=NC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.