Using COC[C@H](C)S(=O)(=O)c1ccc([N+](=O)[O-])cc1CN(C)C(=O)OCc1ccccc1 to produce CNCc1cc(N)ccc1S(=O)(=O)[C@@H](C)COC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.