Using CCOC(=O)c1cc2cccc(N(C)S(=O)(=O)c3ccccc3OC)c2n1COC to produce COc1ccccc1S(=O)(=O)N(C)c1cccc2cc(C(=O)O)[nH]c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.