Using C1CCOC1, COC(=O)C1(NS(=O)(=O)c2ccccc2[N+](=O)[O-])CCC1 to produce CC1CCC1(NS(=O)(=O)c1ccccc1[N+](=O)[O-])C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.