Using C=C[C@H]1CN(C(=O)OCc2ccccc2)C[C@H]1NC(=O)OC(C)(C)C, C=[N+]=[N-] to produce CC(C)(C)OC(=O)N[C@@H]1CN(C(=O)OCc2ccccc2)C[C@@H]1C1CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.