Using CCN(CC)C(=O)N[C@H]1C=C2c3ccc([N+](=O)[O-])c4c3C(CN4)C[C@H]2N(C)C1 to produce CCN(CC)C(=O)N[C@H]1C=C2c3ccc([N+](=O)[O-])c4[nH]cc(c34)C[C@H]2N(C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.