Using CC(=O)Nc1ccc(S(=O)(=O)N(N)C(=O)C=O)cc1, O=CC(=O)O to produce CC(=O)Nc1ccc(S(=O)(=O)NN=CC(=O)O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.