Using O=Cc1cc(Br)c(O)c(Br)c1, N#Cc1ccc2c(c1)NC(=O)C2 to produce N#Cc1ccc2c(c1)NC(=O)C2=Cc1cc(Br)c(O)c(Br)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.