Using C[n+]1ccc(C2=Cc3ccccc3Oc3ccc(Br)cc32)cc1 to produce CN1CC=C(C2=Cc3ccccc3Oc3ccc(Br)cc32)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.