Using O=C([O-])[O-], CN(C)S(=O)(=O)c1ccc(N2C(=O)c3ccccc3C2=O)c(O)c1 to produce COc1cc(S(=O)(=O)N(C)C)ccc1N1C(=O)c2ccccc2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.