Using COCc1nn2c(CN3CC(CCOS(=O)(=O)c4ccc(C)cc4)CC3=O)c(Cl)nc2s1, [F-] to produce COCc1nn2c(CN3CC(CCF)CC3=O)c(Cl)nc2s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.