Using O=C(O)c1cccc([N+](=O)[O-])c1, CCS(N)(=O)=O to produce CCS(=O)(=O)NC(=O)c1cccc([N+](=O)[O-])c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.