Using O=C(Nc1ccccc1/C=C/c1n[nH]c2ccccc12)c1ccc([N+](=O)[O-])cc1 to produce Nc1ccc(C(=O)Nc2ccccc2/C=C/c2n[nH]c3ccccc23)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.