Using O=C(Nc1ccc(S(=O)(=O)[O-])c2cccc(S(=O)(=O)[O-])c12)c1cccc([N+](=O)[O-])c1 to produce Nc1cccc(C(=O)Nc2ccc(S(=O)(=O)[O-])c3cccc(S(=O)(=O)[O-])c23)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.