Using COC(=O)CC(NS(=O)(=O)c1ccc2ccccc2c1)c1ccccc1 to produce O=C(O)CC(NS(=O)(=O)c1ccc2ccccc2c1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.