Using C=CCBr, N#Cc1cc2c(cc1C(F)(F)F)[nH]c(=O)c(=O)n2O to produce C=CCOn1c(=O)c(=O)[nH]c2cc(C(F)(F)F)c(C#N)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.