Using CCOC(=O)c1nn(-c2ccccc2)c2c1CS(=O)(=O)c1c(OC)cccc1-2 to produce COc1cccc2c1S(=O)(=O)Cc1c(C(=O)O)nn(-c3ccccc3)c1-2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.