Using COc1ccc2cc(CN(C)C(=O)c3cn(C)c4ccccc34)ccc2c1Br to produce CN(Cc1ccc2c(Br)c(O)ccc2c1)C(=O)c1cn(C)c2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.