Using CC1(C)Oc2ccc(Br)cc2C(c2cccn(Cc3ccccc3)c2=O)C1O to produce CC1(C)Oc2ccccc2C(c2ccc[nH]c2=O)C1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.