Using CCOC(=O)c1cc([C@@H](C)N[S@](=O)C(C)(C)C)ccc1NS(C)(=O)=O to produce CCOC(=O)c1cc([C@@H](C)N)ccc1NS(C)(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.