Using CC(C)(C)OC(=O)NCCOc1ccc(C(=O)NC[C@H](NS(=O)(=O)c2ccccc2)C(=O)OC(C)(C)C)cc1 to produce NCCOc1ccc(C(=O)NC[C@H](NS(=O)(=O)c2ccccc2)C(=O)O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.