Using CCOC(=O)CNS(=O)(=O)Nc1ccc(C(=O)OC)cc1, C[O-] to produce COC(=O)c1ccc(N2CC(=O)NS2(=O)=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.