Using COC(=O)c1cccc(S(=O)(=O)NC(C(=O)OC(C)(C)C)c2ccccc2)c1 to produce CC(C)(C)OC(=O)C(NS(=O)(=O)c1cccc(C(=O)O)c1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.