Using COc1cc2c(cc1F)C(=Cc1ccc(SC)cc1)C(C)=C2CC(=O)O, CC(C)=O to produce COc1cc2c(cc1F)C(=Cc1ccc(S(C)=O)cc1)C(C)=C2CC(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.