Using Nc1nc(-c2cccc(Cc3ccccc3)c2)[nH]c(=O)c1N=O to produce Nc1nc(-c2cccc(Cc3ccccc3)c2)[nH]c(=O)c1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.