Using O=[N+]([O-])O, CSc1ccc2c(c1)C=Cc1ccc(C=O)cc1S2 to produce CSc1ccc2c(c1)C=Cc1ccc(C=O)cc1S2=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.