Using Cn1ccc2cc(C(=O)Nc3ccc4c(-c5ccc([N+](=O)[O-])cc5)c[nH]c4c3)ccc21 to produce Cn1ccc2cc(C(=O)Nc3ccc4c(-c5ccc(N)cc5)c[nH]c4c3)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.