Using Cc1c[nH]c2c(=O)n(C)c(=O)n(C)c12, O=C(CBr)Nc1nc(-c2ccc(F)cc2F)cs1 to produce Cn1c(=O)c2c(ccn2CC(=O)Nc2nc(-c3ccc(F)cc3F)cs2)n(C)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.