Using CCOC(=O)/C=C\[C@@H]1C[C@@H](SCc2ccc(OC)cc2)CN1C(=O)OC(C)(C)C to produce COC(=O)CC[C@@H]1C[C@@H](SCc2ccc(OC)cc2)CN1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.