Using COc1cccc(SC[C@H](NOC(=O)C(C)(C)C)C(=O)O)c1N to produce COc1cccc2c1NC(=O)[C@@H](NOC(=O)C(C)(C)C)CS2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.