Using COc1cc(C(=O)Nc2ccc3c(c2)OCO3)ccc1NS(C)(=O)=O to produce CS(=O)(=O)Nc1ccc(C(=O)Nc2ccc(O)c(O)c2)cc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.