Using O=C1CC(=O)C2CCC1C2, Cc1c(C(=O)O)ccc(C(F)(F)F)c1S(C)=O to produce Cc1c(C(=O)OC2=CC(=O)C3CCC2C3)ccc(C(F)(F)F)c1S(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.