Using [NH4+], CC1=C(C)CC(C(=O)c2ccccc2)C(C(=O)c2ccccc2)C1 to produce CC1=C(C)Cc2c(-c3ccccc3)[nH]c(-c3ccccc3)c2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.