Using COC(=O)c1cc(NS(C)(=O)=O)c2cc[nH]c2c1, O=C([O-])[O-] to produce COC(=O)c1cc(N(C)S(C)(=O)=O)c2cc[nH]c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.