Using COC(=O)C(CC1CCCC1)c1ccc(SC)c(C(F)(F)F)c1 to produce CSc1ccc(C(CC2CCCC2)C(=O)O)cc1C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.