Using C[n+]1cc(-c2ccc3c(nnn3CC(C)(C)C)c2Br)ccc1CO to produce CN1C=C(c2ccc3c(nnn3CC(C)(C)C)c2Br)CCC1CO, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.