Using [O-][Cl+][O-], Cc1c(C)c([N+](=O)[O-])c(C)c2c1OC(C)(C=O)CC2 to produce Cc1c(C)c([N+](=O)[O-])c(C)c2c1OC(C)(C(=O)O)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.