Using CCOC(=O)C(C)(CCCCSCCCCC(C)(C(=O)OCC)c1ccccc1)c1ccccc1 to produce CC(CCCCSCCCCC(C)(C(=O)O)c1ccccc1)(C(=O)O)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.