Using CC(C(=O)O)c1ccc2c(c1)C(=O)Cc1cc([N+](=O)[O-])ccc1S2, O=C([O-])O to produce COC(=O)C(C)c1ccc2c(c1)C(=O)Cc1cc([N+](=O)[O-])ccc1S2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.