Using O=C(c1ccc(Cl)cc1)c1cccc(CBr)c1, Cn1c(=O)c2[nH]cnc2n(C)c1=O to produce Cn1c(=O)c2c(ncn2Cc2cccc(C(=O)c3ccc(Cl)cc3)c2)n(C)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.