Using CCOC(=O)c1csc([C@H]2CC(C(C)C)N(S(=O)C(C)(C)C)CO2)n1 to produce CCOC(=O)c1csc([C@H](O)C[C@@H](NC)C(C)C)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.