Using CCOC(=O)c1c(SCc2ccc(OC)cc2)nc2c(F)c(F)c(F)cc2c1O to produce CCOC(=O)c1c(S)nc2c(F)c(F)c(F)cc2c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.