Using C=Cc1ccc(NC(=O)c2ccccc2)c(C)c1, CCOC(=O)C=[N+]=[N-] to produce CCOC(=O)[C@@H]1C[C@H]1c1ccc(NC(=O)c2ccccc2)c(C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.