Using O=S([O-])O, COc1ccc(C2(C#N)CCC(OC)(OC)CC2)cc1OC1CCCC1 to produce COc1ccc(C2(C=O)CCC(OC)(OC)CC2)cc1OC1CCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.