Using [N-]=[N+]=[N-], O=C(O)C12CC3CC1CC(N1CCCS1(=O)=O)(C3)C2 to produce NC12CC3CC1CC(N1CCCS1(=O)=O)(C3)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.