Using O=c1[nH]nc(Cc2c(F)cccc2F)c(=S)n1-c1ccccc1, OO to produce O=c1[nH]nc(Cc2c(F)cccc2F)c(=O)n1-c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.