Using COc1c2c(cc(C3CCCC3)c1C(=O)c1ccc(C(F)(F)F)cc1)OC(C)(C)CC2=O to produce CC1(C)CC(=O)c2c(cc(C3CCCC3)c(C(=O)c3ccc(C(F)(F)F)cc3)c2O)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.