Using COS(=O)(=O)OC, O=C(O)C=CC(=S)c1ccc(-c2ccccc2)cc1 to produce COC(=O)C=CC(=S)c1ccc(-c2ccccc2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.