Using O=C(COc1ccccc1)NC(Cc1ccc2cccnc2c1OS(=O)(=O)O)c1ccccc1 to produce O=C(COc1ccccc1)NC(Cc1ccc2cccnc2c1O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.