Using COC(=O)CCc1ccc(OCC(C)c2sc(-c3ccc(C(F)(F)F)cc3)nc2C(C)C)cc1C to produce Cc1cc(OCC(C)c2sc(-c3ccc(C(F)(F)F)cc3)nc2C(C)C)ccc1CCC(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.