Using O=S(=O)([O-])OOS(=O)(=O)[O-], CN1Cc2c(/C=C/c3ccccc3)ccc(NC(=O)OC(C)(C)C)c2C1=O to produce CN1Cc2c(C=O)ccc(NC(=O)OC(C)(C)C)c2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.